diff --git a/apollo-audit/apollo-audit-impl/src/test/java/com/ctrip/framework/apollo/audit/spi/ApolloAuditOperatorSupplierTest.java b/apollo-audit/apollo-audit-impl/src/test/java/com/ctrip/framework/apollo/audit/spi/ApolloAuditOperatorSupplierTest.java
new file mode 100644
index 00000000000..48a3ee319ad
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+++ b/apollo-audit/apollo-audit-impl/src/test/java/com/ctrip/framework/apollo/audit/spi/ApolloAuditOperatorSupplierTest.java
@@ -0,0 +1,74 @@
+/*
+ * Copyright 2024 Apollo Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+package com.ctrip.framework.apollo.audit.spi;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import com.ctrip.framework.apollo.audit.constants.ApolloAuditConstants;
+import com.ctrip.framework.apollo.audit.context.ApolloAuditSpan;
+import com.ctrip.framework.apollo.audit.context.ApolloAuditSpanContext;
+import com.ctrip.framework.apollo.audit.context.ApolloAuditTracer;
+import com.ctrip.framework.apollo.audit.spi.defaultimpl.ApolloAuditOperatorDefaultSupplier;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.mockito.Mockito;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.boot.test.mock.mockito.MockBean;
+import org.springframework.boot.test.mock.mockito.SpyBean;
+import org.springframework.test.context.ContextConfiguration;
+import org.springframework.web.context.request.RequestAttributes;
+import org.springframework.web.context.request.RequestContextHolder;
+
+@SpringBootTest
+@ContextConfiguration(classes = ApolloAuditOperatorSupplier.class)
+public class ApolloAuditOperatorSupplierTest {
+
+  @SpyBean
+  ApolloAuditOperatorDefaultSupplier defaultSupplier;
+
+  @MockBean
+  RequestAttributes requestAttributes;
+  @MockBean
+  ApolloAuditTracer tracer;
+
+  @BeforeEach
+  public void setUp() {
+    Mockito.when(requestAttributes.getAttribute(
+        Mockito.eq(ApolloAuditConstants.TRACER),
+        Mockito.eq(RequestAttributes.SCOPE_REQUEST))
+    ).thenReturn(tracer);
+    RequestContextHolder.setRequestAttributes(requestAttributes);
+  }
+
+  @Test
+  public void testGetOperatorCaseActiveSpanExist() {
+    final String operator = "test";
+    {
+      ApolloAuditSpan activeSpan = new ApolloAuditSpan();
+      activeSpan.setContext(new ApolloAuditSpanContext(null, null, operator, null, null));
+      Mockito.when(tracer.getActiveSpan()).thenReturn(activeSpan);
+    }
+
+    assertEquals(operator, defaultSupplier.getOperator());
+  }
+
+  @Test
+  public void testGetOperatorCaseActiveSpanNotExist() {
+    assertEquals("anonymous", defaultSupplier.getOperator());
+  }
+
+}