diff --git a/api-test/backend/src/main/java/io/metersphere/api/parse/api/HarParser.java b/api-test/backend/src/main/java/io/metersphere/api/parse/api/HarParser.java
index 8d3cdeea7b..56f28591d2 100644
--- a/api-test/backend/src/main/java/io/metersphere/api/parse/api/HarParser.java
+++ b/api-test/backend/src/main/java/io/metersphere/api/parse/api/HarParser.java
@@ -43,8 +43,7 @@ public class HarParser extends HarAbstractParser {
     public ApiDefinitionImport parse(InputStream source, ApiTestImportRequest request) {
         Har har = null;
         try {
-            String sourceStr = getApiTestStr(source);
-            har = HarUtils.read(sourceStr);
+            har = HarUtils.read(source);
         } catch (Exception e) {
             MSException.throwException(e.getMessage());
             LogUtil.error(e.getMessage(), e);
diff --git a/api-test/backend/src/main/java/io/metersphere/api/parse/api/har/HarUtils.java b/api-test/backend/src/main/java/io/metersphere/api/parse/api/har/HarUtils.java
index b5e4cfa2f2..ecbcd8de4c 100644
--- a/api-test/backend/src/main/java/io/metersphere/api/parse/api/har/HarUtils.java
+++ b/api-test/backend/src/main/java/io/metersphere/api/parse/api/har/HarUtils.java
@@ -28,6 +28,7 @@ import org.apache.commons.lang3.StringUtils;
 
 import java.io.File;
 import java.io.IOException;
+import java.io.InputStream;
 
 /**
  * Utility class for working with HAR files.
@@ -42,11 +43,11 @@ public class HarUtils {
     }
 
 
-    public static Har read(String harJson) throws JsonSyntaxException, IOException {
-        if (StringUtils.isEmpty(harJson)) {
+    public static Har read(InputStream source) throws JsonSyntaxException, IOException {
+        if (source == null) {
             throw new IllegalArgumentException("HAR Json cannot be null/empty");
         }
-        Har har = JSON.parseObject(harJson, Har.class);
+        Har har = JSON.parseObject(source, Har.class);
         return har;
     }
 }
diff --git a/api-test/backend/src/main/java/io/metersphere/api/parse/scenario/HarScenarioParser.java b/api-test/backend/src/main/java/io/metersphere/api/parse/scenario/HarScenarioParser.java
index 7e00aa46c0..c65ae5b520 100644
--- a/api-test/backend/src/main/java/io/metersphere/api/parse/scenario/HarScenarioParser.java
+++ b/api-test/backend/src/main/java/io/metersphere/api/parse/scenario/HarScenarioParser.java
@@ -27,8 +27,7 @@ public class HarScenarioParser extends HarScenarioAbstractParser<ScenarioImport>
     public ScenarioImport parse(InputStream source, ApiTestImportRequest request) {
         Har har = null;
         try {
-            String sourceStr = getApiTestStr(source);
-            har = HarUtils.read(sourceStr);
+            har = HarUtils.read(source);
         } catch (Exception e) {
             MSException.throwException(e.getMessage());
             LogUtil.error(e.getMessage(), e);