diff --git a/designer-base/src/main/java/com/fr/design/extra/PluginOperateUtils.java b/designer-base/src/main/java/com/fr/design/extra/PluginOperateUtils.java
index 46683e0a0..499254aeb 100644
--- a/designer-base/src/main/java/com/fr/design/extra/PluginOperateUtils.java
+++ b/designer-base/src/main/java/com/fr/design/extra/PluginOperateUtils.java
@@ -231,7 +231,7 @@ public class PluginOperateUtils {
         else if (pluginMarker instanceof PluginMarkerAdapter) {
             return ((PluginMarkerAdapter) pluginMarker).getPluginName();
         }
-        return pluginMarker == null ? null : pluginMarker.getPluginID();
+        return pluginMarker == null ? StringUtils.EMPTY : pluginMarker.getPluginID();
     }
 
     public static String getSwitchedInfo(PluginTaskResult result) {
diff --git a/designer-base/src/test/java/com/fr/design/extra/PluginOperateUtilsTest.java b/designer-base/src/test/java/com/fr/design/extra/PluginOperateUtilsTest.java
index 887cde43e..bc81cb2c3 100644
--- a/designer-base/src/test/java/com/fr/design/extra/PluginOperateUtilsTest.java
+++ b/designer-base/src/test/java/com/fr/design/extra/PluginOperateUtilsTest.java
@@ -92,7 +92,7 @@ public class PluginOperateUtilsTest {
 
         EasyMock.replay(pluginContext);
 
-        Assert.assertNull(Reflect.on(PluginOperateUtils.class).call("getPluginName", null, null).get());
+        Assert.assertEquals(Reflect.on(PluginOperateUtils.class).call("getPluginName", null, null).get(), "");
         Assert.assertEquals(Reflect.on(PluginOperateUtils.class).call("getPluginName", pluginContext, pluginMarker1).get(), "pluginContext");
         Assert.assertEquals(Reflect.on(PluginOperateUtils.class).call("getPluginName", null, pluginMarker1).get(), "id-1");
         Assert.assertEquals(Reflect.on(PluginOperateUtils.class).call("getPluginName", null, pluginMarker2).get(), "name-2");