diff --git a/src/main/java/com/sztzjy/linkCommerce/service/impl/TrainingTaskServiceImpl.java b/src/main/java/com/sztzjy/linkCommerce/service/impl/TrainingTaskServiceImpl.java
index 36075d2..99f88a2 100644
--- a/src/main/java/com/sztzjy/linkCommerce/service/impl/TrainingTaskServiceImpl.java
+++ b/src/main/java/com/sztzjy/linkCommerce/service/impl/TrainingTaskServiceImpl.java
@@ -208,7 +208,6 @@ public class TrainingTaskServiceImpl implements TrainingTaskService {
                 }
                 sort++;
             }
-            ensureTaskAllocationClassIndex();
             defaultTasksInitialized = true;
         }
     }
@@ -716,14 +715,6 @@ public class TrainingTaskServiceImpl implements TrainingTaskService {
         trainingTaskClassConfigTableChecked = true;
     }
 
-    private void ensureTaskAllocationClassIndex() {
-        if (jdbcTemplate == null) {
-            return;
-        }
-        jdbcTemplate.execute("CREATE INDEX IF NOT EXISTS idx_task_allocation_class_disabled_module "
-                + "ON task_allocation (class_id, disabled_status, module)");
-    }
-
     TrainingTask buildTask(TrainingTaskImportDTO row, int rowNumber, List<String> errors) {
         String projectName = StringUtils.trimToEmpty(row.getProjectName());
         String taskKey = StringUtils.trimToEmpty(row.getTaskKey());
diff --git a/src/test/java/com/sztzjy/linkCommerce/service/impl/TrainingTaskServiceImplTest.java b/src/test/java/com/sztzjy/linkCommerce/service/impl/TrainingTaskServiceImplTest.java
index 3c09aad..7292bb4 100644
--- a/src/test/java/com/sztzjy/linkCommerce/service/impl/TrainingTaskServiceImplTest.java
+++ b/src/test/java/com/sztzjy/linkCommerce/service/impl/TrainingTaskServiceImplTest.java
@@ -27,6 +27,7 @@ import static org.junit.jupiter.api.Assertions.assertThrows;
 import static org.junit.jupiter.api.Assertions.assertTrue;
 import static org.mockito.ArgumentMatchers.any;
 import static org.mockito.ArgumentMatchers.anyString;
+import static org.mockito.ArgumentMatchers.contains;
 import static org.mockito.ArgumentMatchers.isNull;
 import static org.mockito.ArgumentMatchers.startsWith;
 import static org.mockito.Mockito.mock;
@@ -38,6 +39,19 @@ import static org.mockito.Mockito.when;
 
 class TrainingTaskServiceImplTest {
 
+    @Test
+    void defaultTaskInitializationDoesNotRunTaskAllocationSchemaDdl() {
+        TrainingTaskServiceImpl service = new TrainingTaskServiceImpl();
+        service.trainingTaskMapper = mock(TrainingTaskMapper.class);
+        service.jdbcTemplate = mock(JdbcTemplate.class);
+        when(service.trainingTaskMapper.selectByTaskKey(anyString()))
+                .thenReturn(storedTask("existing-task", "new-product-survey"));
+
+        service.ensureDefaultTasks(null);
+
+        verify(service.jdbcTemplate, never()).execute(contains("task_allocation"));
+    }
+
     @Test
     void splitListSupportsCommonSeparators() {
         TrainingTaskServiceImpl service = new TrainingTaskServiceImpl();