diff --git a/internal/sql_workbench/service/sql_workbench_service.go b/internal/sql_workbench/service/sql_workbench_service.go
index ef8fb3ac..33af90b4 100644
--- a/internal/sql_workbench/service/sql_workbench_service.go
+++ b/internal/sql_workbench/service/sql_workbench_service.go
@@ -1441,6 +1441,19 @@ func (sqlWorkbenchService *SqlWorkbenchService) isEnableSQLAudit(dbService *biz.
 	return dbService.SQLEConfig.AuditEnabled && dbService.SQLEConfig.SQLQueryConfig.AuditEnabled
 }
 
+// normalizeSQLEAuditSchemaName 将 ODC SQL Server 的 database.schema 组合归一化为 SQLE 连接库名。
+// ODC 将 SQL Server 的 database.schema 平铺为 schema 名（如 TestDB.dbo），
+// 而 SQLE 直连审核会把 schema_name 当作连接的数据库名。
+func normalizeSQLEAuditSchemaName(dbType, schemaName string) string {
+	if dbType != string(pkgConst.DBTypeSQLServer) {
+		return schemaName
+	}
+	if idx := strings.Index(schemaName, "."); idx > 0 {
+		return schemaName[:idx]
+	}
+	return schemaName
+}
+
 // callSQLEAudit 调用 SQLE 直接审核接口
 func (sqlWorkbenchService *SqlWorkbenchService) callSQLEAudit(ctx context.Context, sql string, dbService *biz.DBService, schemaName string) (*cloudbeaver.AuditSQLReply, error) {
 	// 获取 SQLE 服务地址
@@ -1450,6 +1463,7 @@ func (sqlWorkbenchService *SqlWorkbenchService) callSQLEAudit(ctx context.Contex
 	}
 
 	sqleAddr := fmt.Sprintf("%s/v2/sql_audit", target.URL.String())
+	schemaName = normalizeSQLEAuditSchemaName(dbService.DBType, schemaName)
 
 	auditReq := cloudbeaver.AuditSQLReq{
 		InstanceType:     dbService.DBType,
diff --git a/internal/sql_workbench/service/sql_workbench_service_test.go b/internal/sql_workbench/service/sql_workbench_service_test.go
index 090ad66c..b73860ba 100644
--- a/internal/sql_workbench/service/sql_workbench_service_test.go
+++ b/internal/sql_workbench/service/sql_workbench_service_test.go
@@ -367,3 +367,45 @@ func Test_buildOdcCreateAndUpdateRequests_setPasswordSaved(t *testing.T) {
 		t.Fatalf("expected passwordSaved in update JSON: %s", updateJSON)
 	}
 }
+
+func Test_normalizeSQLEAuditSchemaName(t *testing.T) {
+	cases := map[string]struct {
+		dbType   string
+		schema   string
+		expected string
+	}{
+		"SQL Server database.schema": {
+			dbType:   string(pkgConst.DBTypeSQLServer),
+			schema:   "TestDB.dbo",
+			expected: "TestDB",
+		},
+		"SQL Server catalog only": {
+			dbType:   string(pkgConst.DBTypeSQLServer),
+			schema:   "TestDB",
+			expected: "TestDB",
+		},
+		"SQL Server non-dbo schema": {
+			dbType:   string(pkgConst.DBTypeSQLServer),
+			schema:   "TestDB.sales",
+			expected: "TestDB",
+		},
+		"MySQL schema unchanged": {
+			dbType:   string(pkgConst.DBTypeMySQL),
+			schema:   "app.db",
+			expected: "app.db",
+		},
+		"Oracle schema unchanged": {
+			dbType:   string(pkgConst.DBTypeOracle),
+			schema:   "HR",
+			expected: "HR",
+		},
+	}
+	for name, tc := range cases {
+		t.Run(name, func(t *testing.T) {
+			got := normalizeSQLEAuditSchemaName(tc.dbType, tc.schema)
+			if got != tc.expected {
+				t.Fatalf("normalizeSQLEAuditSchemaName(%q, %q) = %q, want %q", tc.dbType, tc.schema, got, tc.expected)
+			}
+		})
+	}
+}