diff --git a/backend/src/main/java/io/metersphere/base/domain/TestCase.java b/backend/src/main/java/io/metersphere/base/domain/TestCase.java
index fcd9e1eaa0..39986fd37c 100644
--- a/backend/src/main/java/io/metersphere/base/domain/TestCase.java
+++ b/backend/src/main/java/io/metersphere/base/domain/TestCase.java
@@ -23,8 +23,6 @@ public class TestCase implements Serializable {
 
     private String method;
 
-    private String prerequisite;
-
     private Long createTime;
 
     private Long updateTime;
@@ -52,6 +50,6 @@ public class TestCase implements Serializable {
     private String customNum;
 
     private String stepModel;
-  
+
     private static final long serialVersionUID = 1L;
 }
\ No newline at end of file
diff --git a/backend/src/main/java/io/metersphere/base/domain/TestCaseExample.java b/backend/src/main/java/io/metersphere/base/domain/TestCaseExample.java
index bd705ebc3a..7e5cb7ca2e 100644
--- a/backend/src/main/java/io/metersphere/base/domain/TestCaseExample.java
+++ b/backend/src/main/java/io/metersphere/base/domain/TestCaseExample.java
@@ -734,76 +734,6 @@ public class TestCaseExample {
             return (Criteria) this;
         }
 
-        public Criteria andPrerequisiteIsNull() {
-            addCriterion("prerequisite is null");
-            return (Criteria) this;
-        }
-
-        public Criteria andPrerequisiteIsNotNull() {
-            addCriterion("prerequisite is not null");
-            return (Criteria) this;
-        }
-
-        public Criteria andPrerequisiteEqualTo(String value) {
-            addCriterion("prerequisite =", value, "prerequisite");
-            return (Criteria) this;
-        }
-
-        public Criteria andPrerequisiteNotEqualTo(String value) {
-            addCriterion("prerequisite <>", value, "prerequisite");
-            return (Criteria) this;
-        }
-
-        public Criteria andPrerequisiteGreaterThan(String value) {
-            addCriterion("prerequisite >", value, "prerequisite");
-            return (Criteria) this;
-        }
-
-        public Criteria andPrerequisiteGreaterThanOrEqualTo(String value) {
-            addCriterion("prerequisite >=", value, "prerequisite");
-            return (Criteria) this;
-        }
-
-        public Criteria andPrerequisiteLessThan(String value) {
-            addCriterion("prerequisite <", value, "prerequisite");
-            return (Criteria) this;
-        }
-
-        public Criteria andPrerequisiteLessThanOrEqualTo(String value) {
-            addCriterion("prerequisite <=", value, "prerequisite");
-            return (Criteria) this;
-        }
-
-        public Criteria andPrerequisiteLike(String value) {
-            addCriterion("prerequisite like", value, "prerequisite");
-            return (Criteria) this;
-        }
-
-        public Criteria andPrerequisiteNotLike(String value) {
-            addCriterion("prerequisite not like", value, "prerequisite");
-            return (Criteria) this;
-        }
-
-        public Criteria andPrerequisiteIn(List<String> values) {
-            addCriterion("prerequisite in", values, "prerequisite");
-            return (Criteria) this;
-        }
-
-        public Criteria andPrerequisiteNotIn(List<String> values) {
-            addCriterion("prerequisite not in", values, "prerequisite");
-            return (Criteria) this;
-        }
-
-        public Criteria andPrerequisiteBetween(String value1, String value2) {
-            addCriterion("prerequisite between", value1, value2, "prerequisite");
-            return (Criteria) this;
-        }
-
-        public Criteria andPrerequisiteNotBetween(String value1, String value2) {
-            addCriterion("prerequisite not between", value1, value2, "prerequisite");
-            return (Criteria) this;
-        }
-
         public Criteria andCreateTimeIsNull() {
             addCriterion("create_time is null");
             return (Criteria) this;
@@ -1743,7 +1673,6 @@ public class TestCaseExample {
             addCriterion("step_model not between", value1, value2, "stepModel");
             return (Criteria) this;
         }
-
     }
 
     public static class Criteria extends GeneratedCriteria {
diff --git a/backend/src/main/java/io/metersphere/base/domain/TestCaseWithBLOBs.java b/backend/src/main/java/io/metersphere/base/domain/TestCaseWithBLOBs.java
index 6658a35723..0b79daa67b 100644
--- a/backend/src/main/java/io/metersphere/base/domain/TestCaseWithBLOBs.java
+++ b/backend/src/main/java/io/metersphere/base/domain/TestCaseWithBLOBs.java
@@ -9,6 +9,8 @@ import lombok.ToString;
 @EqualsAndHashCode(callSuper = true)
 @ToString(callSuper = true)
 public class TestCaseWithBLOBs extends TestCase implements Serializable {
+    private String prerequisite;
+
     private String remark;
 
     private String steps;
diff --git a/backend/src/main/java/io/metersphere/base/mapper/TestCaseMapper.xml b/backend/src/main/java/io/metersphere/base/mapper/TestCaseMapper.xml
index ad2c420971..44a8e84811 100644
--- a/backend/src/main/java/io/metersphere/base/mapper/TestCaseMapper.xml
+++ b/backend/src/main/java/io/metersphere/base/mapper/TestCaseMapper.xml
@@ -11,7 +11,6 @@
     <result column="maintainer" jdbcType="VARCHAR" property="maintainer" />
     <result column="priority" jdbcType="VARCHAR" property="priority" />
     <result column="method" jdbcType="VARCHAR" property="method" />
-    <result column="prerequisite" jdbcType="VARCHAR" property="prerequisite" />
     <result column="create_time" jdbcType="BIGINT" property="createTime" />
     <result column="update_time" jdbcType="BIGINT" property="updateTime" />
     <result column="test_id" jdbcType="VARCHAR" property="testId" />
@@ -28,6 +27,7 @@
     <result column="step_model" jdbcType="VARCHAR" property="stepModel" />
   </resultMap>
   <resultMap extends="BaseResultMap" id="ResultMapWithBLOBs" type="io.metersphere.base.domain.TestCaseWithBLOBs">
+    <result column="prerequisite" jdbcType="LONGVARCHAR" property="prerequisite" />
     <result column="remark" jdbcType="LONGVARCHAR" property="remark" />
     <result column="steps" jdbcType="LONGVARCHAR" property="steps" />
     <result column="step_description" jdbcType="LONGVARCHAR" property="stepDescription" />
@@ -94,11 +94,11 @@
   </sql>
   <sql id="Base_Column_List">
     id, node_id, node_path, project_id, `name`, `type`, maintainer, priority, `method`, 
-    prerequisite, create_time, update_time, test_id, sort, num, other_test_name, review_status, 
-    tags, demand_id, demand_name, follow_people, `status`, custom_num, step_model
+    create_time, update_time, test_id, sort, num, other_test_name, review_status, tags, 
+    demand_id, demand_name, follow_people, `status`, custom_num, step_model
   </sql>
   <sql id="Blob_Column_List">
-    remark, steps, step_description, expected_result, custom_fields
+    prerequisite, remark, steps, step_description, expected_result, custom_fields
   </sql>
   <select id="selectByExampleWithBLOBs" parameterType="io.metersphere.base.domain.TestCaseExample" resultMap="ResultMapWithBLOBs">
     select
@@ -152,21 +152,21 @@
     insert into test_case (id, node_id, node_path, 
       project_id, `name`, `type`, 
       maintainer, priority, `method`, 
-      prerequisite, create_time, update_time, 
-      test_id, sort, num, 
-      other_test_name, review_status, tags, 
-      demand_id, demand_name, follow_people, 
-      `status`, custom_num, step_model, 
+      create_time, update_time, test_id, 
+      sort, num, other_test_name, 
+      review_status, tags, demand_id, 
+      demand_name, follow_people, `status`, 
+      custom_num, step_model, prerequisite, 
       remark, steps, step_description, 
       expected_result, custom_fields)
     values (#{id,jdbcType=VARCHAR}, #{nodeId,jdbcType=VARCHAR}, #{nodePath,jdbcType=VARCHAR}, 
       #{projectId,jdbcType=VARCHAR}, #{name,jdbcType=VARCHAR}, #{type,jdbcType=VARCHAR}, 
       #{maintainer,jdbcType=VARCHAR}, #{priority,jdbcType=VARCHAR}, #{method,jdbcType=VARCHAR}, 
-      #{prerequisite,jdbcType=VARCHAR}, #{createTime,jdbcType=BIGINT}, #{updateTime,jdbcType=BIGINT}, 
-      #{testId,jdbcType=VARCHAR}, #{sort,jdbcType=INTEGER}, #{num,jdbcType=INTEGER}, 
-      #{otherTestName,jdbcType=VARCHAR}, #{reviewStatus,jdbcType=VARCHAR}, #{tags,jdbcType=VARCHAR}, 
-      #{demandId,jdbcType=VARCHAR}, #{demandName,jdbcType=VARCHAR}, #{followPeople,jdbcType=VARCHAR}, 
-      #{status,jdbcType=VARCHAR}, #{customNum,jdbcType=VARCHAR}, #{stepModel,jdbcType=VARCHAR}, 
+      #{createTime,jdbcType=BIGINT}, #{updateTime,jdbcType=BIGINT}, #{testId,jdbcType=VARCHAR}, 
+      #{sort,jdbcType=INTEGER}, #{num,jdbcType=INTEGER}, #{otherTestName,jdbcType=VARCHAR}, 
+      #{reviewStatus,jdbcType=VARCHAR}, #{tags,jdbcType=VARCHAR}, #{demandId,jdbcType=VARCHAR}, 
+      #{demandName,jdbcType=VARCHAR}, #{followPeople,jdbcType=VARCHAR}, #{status,jdbcType=VARCHAR}, 
+      #{customNum,jdbcType=VARCHAR}, #{stepModel,jdbcType=VARCHAR}, #{prerequisite,jdbcType=LONGVARCHAR}, 
       #{remark,jdbcType=LONGVARCHAR}, #{steps,jdbcType=LONGVARCHAR}, #{stepDescription,jdbcType=LONGVARCHAR}, 
       #{expectedResult,jdbcType=LONGVARCHAR}, #{customFields,jdbcType=LONGVARCHAR})
   </insert>
@@ -200,9 +200,6 @@
       <if test="method != null">
         `method`,
       </if>
-      <if test="prerequisite != null">
-        prerequisite,
-      </if>
       <if test="createTime != null">
         create_time,
       </if>
@@ -245,6 +242,9 @@
       <if test="stepModel != null">
         step_model,
       </if>
+      <if test="prerequisite != null">
+        prerequisite,
+      </if>
       <if test="remark != null">
         remark,
       </if>
@@ -289,9 +289,6 @@
       <if test="method != null">
         #{method,jdbcType=VARCHAR},
       </if>
-      <if test="prerequisite != null">
-        #{prerequisite,jdbcType=VARCHAR},
-      </if>
       <if test="createTime != null">
         #{createTime,jdbcType=BIGINT},
       </if>
@@ -334,6 +331,9 @@
       <if test="stepModel != null">
         #{stepModel,jdbcType=VARCHAR},
       </if>
+      <if test="prerequisite != null">
+        #{prerequisite,jdbcType=LONGVARCHAR},
+      </if>
       <if test="remark != null">
         #{remark,jdbcType=LONGVARCHAR},
       </if>
@@ -387,9 +387,6 @@
       <if test="record.method != null">
         `method` = #{record.method,jdbcType=VARCHAR},
       </if>
-      <if test="record.prerequisite != null">
-        prerequisite = #{record.prerequisite,jdbcType=VARCHAR},
-      </if>
       <if test="record.createTime != null">
         create_time = #{record.createTime,jdbcType=BIGINT},
       </if>
@@ -432,6 +429,9 @@
       <if test="record.stepModel != null">
         step_model = #{record.stepModel,jdbcType=VARCHAR},
       </if>
+      <if test="record.prerequisite != null">
+        prerequisite = #{record.prerequisite,jdbcType=LONGVARCHAR},
+      </if>
       <if test="record.remark != null">
         remark = #{record.remark,jdbcType=LONGVARCHAR},
       </if>
@@ -463,7 +463,6 @@
       maintainer = #{record.maintainer,jdbcType=VARCHAR},
       priority = #{record.priority,jdbcType=VARCHAR},
       `method` = #{record.method,jdbcType=VARCHAR},
-      prerequisite = #{record.prerequisite,jdbcType=VARCHAR},
       create_time = #{record.createTime,jdbcType=BIGINT},
       update_time = #{record.updateTime,jdbcType=BIGINT},
       test_id = #{record.testId,jdbcType=VARCHAR},
@@ -478,6 +477,7 @@
       `status` = #{record.status,jdbcType=VARCHAR},
       custom_num = #{record.customNum,jdbcType=VARCHAR},
       step_model = #{record.stepModel,jdbcType=VARCHAR},
+      prerequisite = #{record.prerequisite,jdbcType=LONGVARCHAR},
       remark = #{record.remark,jdbcType=LONGVARCHAR},
       steps = #{record.steps,jdbcType=LONGVARCHAR},
       step_description = #{record.stepDescription,jdbcType=LONGVARCHAR},
@@ -498,7 +498,6 @@
       maintainer = #{record.maintainer,jdbcType=VARCHAR},
       priority = #{record.priority,jdbcType=VARCHAR},
       `method` = #{record.method,jdbcType=VARCHAR},
-      prerequisite = #{record.prerequisite,jdbcType=VARCHAR},
       create_time = #{record.createTime,jdbcType=BIGINT},
       update_time = #{record.updateTime,jdbcType=BIGINT},
       test_id = #{record.testId,jdbcType=VARCHAR},
@@ -544,9 +543,6 @@
       <if test="method != null">
         `method` = #{method,jdbcType=VARCHAR},
       </if>
-      <if test="prerequisite != null">
-        prerequisite = #{prerequisite,jdbcType=VARCHAR},
-      </if>
       <if test="createTime != null">
         create_time = #{createTime,jdbcType=BIGINT},
       </if>
@@ -589,6 +585,9 @@
       <if test="stepModel != null">
         step_model = #{stepModel,jdbcType=VARCHAR},
       </if>
+      <if test="prerequisite != null">
+        prerequisite = #{prerequisite,jdbcType=LONGVARCHAR},
+      </if>
       <if test="remark != null">
         remark = #{remark,jdbcType=LONGVARCHAR},
       </if>
@@ -617,7 +616,6 @@
       maintainer = #{maintainer,jdbcType=VARCHAR},
       priority = #{priority,jdbcType=VARCHAR},
       `method` = #{method,jdbcType=VARCHAR},
-      prerequisite = #{prerequisite,jdbcType=VARCHAR},
       create_time = #{createTime,jdbcType=BIGINT},
       update_time = #{updateTime,jdbcType=BIGINT},
       test_id = #{testId,jdbcType=VARCHAR},
@@ -632,6 +630,7 @@
       `status` = #{status,jdbcType=VARCHAR},
       custom_num = #{customNum,jdbcType=VARCHAR},
       step_model = #{stepModel,jdbcType=VARCHAR},
+      prerequisite = #{prerequisite,jdbcType=LONGVARCHAR},
       remark = #{remark,jdbcType=LONGVARCHAR},
       steps = #{steps,jdbcType=LONGVARCHAR},
       step_description = #{stepDescription,jdbcType=LONGVARCHAR},
@@ -649,7 +648,6 @@
       maintainer = #{maintainer,jdbcType=VARCHAR},
       priority = #{priority,jdbcType=VARCHAR},
       `method` = #{method,jdbcType=VARCHAR},
-      prerequisite = #{prerequisite,jdbcType=VARCHAR},
       create_time = #{createTime,jdbcType=BIGINT},
       update_time = #{updateTime,jdbcType=BIGINT},
       test_id = #{testId,jdbcType=VARCHAR},
diff --git a/backend/src/main/java/io/metersphere/excel/domain/TestCaseExcelDataCn.java b/backend/src/main/java/io/metersphere/excel/domain/TestCaseExcelDataCn.java
index 6cc4b5fca4..32638e93d3 100644
--- a/backend/src/main/java/io/metersphere/excel/domain/TestCaseExcelDataCn.java
+++ b/backend/src/main/java/io/metersphere/excel/domain/TestCaseExcelDataCn.java
@@ -56,21 +56,17 @@ public class TestCaseExcelDataCn extends TestCaseExcelData {
 
     @ColumnWidth(50)
     @ExcelProperty("前置条件")
-    @Length(min = 0, max = 500)
     private String prerequisite;
 
     @ColumnWidth(50)
     @ExcelProperty("备注")
-    @Length(max = 1000)
     private String remark;
 
     @ColumnWidth(50)
     @ExcelProperty("步骤描述")
-    @Length(max = 1000)
     private String stepDesc;
 
     @ColumnWidth(50)
     @ExcelProperty("预期结果")
-    @Length(max = 1000)
     private String stepResult;
 }
diff --git a/backend/src/main/java/io/metersphere/excel/domain/TestCaseExcelDataTw.java b/backend/src/main/java/io/metersphere/excel/domain/TestCaseExcelDataTw.java
index aeea86ca0f..7060931a30 100644
--- a/backend/src/main/java/io/metersphere/excel/domain/TestCaseExcelDataTw.java
+++ b/backend/src/main/java/io/metersphere/excel/domain/TestCaseExcelDataTw.java
@@ -56,21 +56,17 @@ public class TestCaseExcelDataTw extends TestCaseExcelData {
 
     @ColumnWidth(50)
     @ExcelProperty("前置條件")
-    @Length(min = 0, max = 1000)
     private String prerequisite;
 
     @ColumnWidth(50)
     @ExcelProperty("備註")
-    @Length(max = 1000)
     private String remark;
 
     @ColumnWidth(50)
     @ExcelProperty("步驟描述")
-    @Length(max = 1000)
     private String stepDesc;
 
     @ColumnWidth(50)
     @ExcelProperty("預期結果")
-    @Length(max = 1000)
     private String stepResult;
 }
diff --git a/backend/src/main/java/io/metersphere/excel/domain/TestCaseExcelDataUs.java b/backend/src/main/java/io/metersphere/excel/domain/TestCaseExcelDataUs.java
index c56260b523..da1e74ad96 100644
--- a/backend/src/main/java/io/metersphere/excel/domain/TestCaseExcelDataUs.java
+++ b/backend/src/main/java/io/metersphere/excel/domain/TestCaseExcelDataUs.java
@@ -57,21 +57,17 @@ public class TestCaseExcelDataUs extends TestCaseExcelData {
 
     @ColumnWidth(50)
     @ExcelProperty("Prerequisite")
-    @Length(min = 0, max = 1000)
     private String prerequisite;
 
     @ColumnWidth(50)
     @ExcelProperty("Remark")
-    @Length(max = 1000)
     private String remark;
 
     @ColumnWidth(50)
     @ExcelProperty("Step description")
-    @Length(max = 1000)
     private String stepDesc;
 
     @ColumnWidth(50)
     @ExcelProperty("Step result")
-    @Length(max = 1000)
     private String stepResult;
 }
diff --git a/backend/src/main/java/io/metersphere/track/service/TestCaseService.java b/backend/src/main/java/io/metersphere/track/service/TestCaseService.java
index 68cb39f61d..2e2ea78c69 100644
--- a/backend/src/main/java/io/metersphere/track/service/TestCaseService.java
+++ b/backend/src/main/java/io/metersphere/track/service/TestCaseService.java
@@ -208,10 +208,6 @@ public class TestCaseService {
                 criteria.andTestIdEqualTo(testCase.getTestId());
             }
 
-            if (StringUtils.isNotBlank(testCase.getPrerequisite())) {
-                criteria.andPrerequisiteEqualTo(testCase.getPrerequisite());
-            }
-
             if (StringUtils.isNotBlank(testCase.getId())) {
                 criteria.andIdNotEqualTo(testCase.getId());
             }
@@ -222,10 +218,12 @@ public class TestCaseService {
             if (!CollectionUtils.isEmpty(caseList)) {
                 String caseRemark = testCase.getRemark();
                 String caseSteps = testCase.getSteps();
+                String casePrerequisite = testCase.getPrerequisite();
                 for (TestCaseWithBLOBs tc : caseList) {
                     String steps = tc.getSteps();
                     String remark = tc.getRemark();
-                    if (StringUtils.equals(steps, caseSteps) && StringUtils.equals(remark, caseRemark)) {
+                    String prerequisite = tc.getPrerequisite();
+                    if (StringUtils.equals(steps, caseSteps) && StringUtils.equals(remark, caseRemark) && StringUtils.equals(prerequisite, casePrerequisite)) {
                          //MSException.throwException(Translator.get("test_case_already_exists"));
                         return tc;
                     }
diff --git a/backend/src/main/resources/db/migration/V80__v1.9.0_release.sql b/backend/src/main/resources/db/migration/V80__v1.9.0_release.sql
index ebfa2934e2..a6842fe953 100644
--- a/backend/src/main/resources/db/migration/V80__v1.9.0_release.sql
+++ b/backend/src/main/resources/db/migration/V80__v1.9.0_release.sql
@@ -256,3 +256,6 @@ WHERE `type`='test_plan_function_test_case';
 -- 自定义用例ID
 alter table project add custom_num tinyint(1) default 0 null comment '是否开启自定义ID(默认关闭)';
 alter table test_case add custom_num varchar(64) null comment 'custom num';
+
+-- 修改前置条件为text
+ALTER TABLE test_case MODIFY COLUMN prerequisite text CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci NULL COMMENT 'Test case prerequisite condition';
diff --git a/backend/src/main/resources/generatorConfig.xml b/backend/src/main/resources/generatorConfig.xml
index e0015551c4..572b8df9d3 100644
--- a/backend/src/main/resources/generatorConfig.xml
+++ b/backend/src/main/resources/generatorConfig.xml
@@ -77,7 +77,7 @@
         <table tableName="test_case_review_scenario"/>
         <table tableName="test_plan"/>
         <table tableName="test_case_test"/>-->
-        <table tableName="test_case_template"></table>
+        <table tableName="test_case"></table>
 <!--        <table tableName="custom_field"></table>-->
 <!--        <table tableName="test_case"></table>-->
         <table tableName="test_case"></table>