diff --git a/backend/src/main/java/io/metersphere/api/service/ApiAutomationService.java b/backend/src/main/java/io/metersphere/api/service/ApiAutomationService.java
index 1b1a23754b..fe96f007a9 100644
--- a/backend/src/main/java/io/metersphere/api/service/ApiAutomationService.java
+++ b/backend/src/main/java/io/metersphere/api/service/ApiAutomationService.java
@@ -326,7 +326,7 @@ public class ApiAutomationService {
 
     private int getNextNum(String projectId) {
         ApiScenario apiScenario = extApiScenarioMapper.getNextNum(projectId);
-        if (apiScenario == null) {
+        if (apiScenario == null || apiScenario.getNum() == null) {
             return 100001;
         } else {
             return Optional.of(apiScenario.getNum() + 1).orElse(100001);
diff --git a/backend/src/main/java/io/metersphere/api/service/ApiDefinitionService.java b/backend/src/main/java/io/metersphere/api/service/ApiDefinitionService.java
index 3190285e6c..131ac823bc 100644
--- a/backend/src/main/java/io/metersphere/api/service/ApiDefinitionService.java
+++ b/backend/src/main/java/io/metersphere/api/service/ApiDefinitionService.java
@@ -359,7 +359,7 @@ public class ApiDefinitionService {
 
     private int getNextNum(String projectId) {
         ApiDefinition apiDefinition = extApiDefinitionMapper.getNextNum(projectId);
-        if (apiDefinition == null) {
+        if (apiDefinition == null || apiDefinition.getNum() == null) {
             return 100001;
         } else {
             return Optional.of(apiDefinition.getNum() + 1).orElse(100001);
diff --git a/backend/src/main/java/io/metersphere/api/service/HistoricalDataUpgradeService.java b/backend/src/main/java/io/metersphere/api/service/HistoricalDataUpgradeService.java
index 7f51cf6708..019e5c6eea 100644
--- a/backend/src/main/java/io/metersphere/api/service/HistoricalDataUpgradeService.java
+++ b/backend/src/main/java/io/metersphere/api/service/HistoricalDataUpgradeService.java
@@ -64,7 +64,7 @@ public class HistoricalDataUpgradeService {
 
     private int getNextNum(String projectId) {
         ApiScenario apiScenario = extApiScenarioMapper.getNextNum(projectId);
-        if (apiScenario == null) {
+        if (apiScenario == null || apiScenario.getNum() == null) {
             return 100001;
         } else {
             return Optional.of(apiScenario.getNum() + 1).orElse(100001);
diff --git a/backend/src/main/java/io/metersphere/performance/service/PerformanceTestService.java b/backend/src/main/java/io/metersphere/performance/service/PerformanceTestService.java
index d7700eab62..8166327466 100644
--- a/backend/src/main/java/io/metersphere/performance/service/PerformanceTestService.java
+++ b/backend/src/main/java/io/metersphere/performance/service/PerformanceTestService.java
@@ -589,7 +589,7 @@ public class PerformanceTestService {
 
     private int getNextNum(String projectId) {
         LoadTest loadTest = extLoadTestMapper.getNextNum(projectId);
-        if (loadTest == null) {
+        if (loadTest == null || loadTest.getNum() == null) {
             return 100001;
         } else {
             return Optional.of(loadTest.getNum() + 1).orElse(100001);
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 733cad5ef3..edcdfcb1b0 100644
--- a/backend/src/main/java/io/metersphere/track/service/TestCaseService.java
+++ b/backend/src/main/java/io/metersphere/track/service/TestCaseService.java
@@ -984,7 +984,7 @@ public class TestCaseService {
      */
     private int getNextNum(String projectId) {
         TestCase testCase = extTestCaseMapper.getMaxNumByProjectId(projectId);
-        if (testCase == null) {
+        if (testCase == null || testCase.getNum() == null) {
             return 100001;
         } else {
             return Optional.ofNullable(testCase.getNum() + 1).orElse(100001);