diff --git a/novalon-manage-api/manage-db/src/test/java/cn/novalon/manage/db/converter/SysDictDataConverterTest.java b/novalon-manage-api/manage-db/src/test/java/cn/novalon/manage/db/converter/SysDictDataConverterTest.java
new file mode 100644
index 0000000..98b7455
--- /dev/null
+++ b/novalon-manage-api/manage-db/src/test/java/cn/novalon/manage/db/converter/SysDictDataConverterTest.java
@@ -0,0 +1,95 @@
+package cn.novalon.manage.db.converter;
+
+import cn.novalon.manage.sys.core.domain.SysDictData;
+import cn.novalon.manage.db.entity.SysDictDataEntity;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.ExtendWith;
+import org.mockito.junit.jupiter.MockitoExtension;
+
+import java.time.LocalDateTime;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+@ExtendWith(MockitoExtension.class)
+class SysDictDataConverterTest {
+
+    private SysDictDataConverter converter;
+    private SysDictDataEntity testEntity;
+    private SysDictData testDomain;
+
+    @BeforeEach
+    void setUp() {
+        converter = new SysDictDataConverter();
+        
+        testEntity = new SysDictDataEntity();
+        testEntity.setId(1L);
+        testEntity.setDictSort(1);
+        testEntity.setDictLabel("正常");
+        testEntity.setDictValue("0");
+        testEntity.setDictType("user_status");
+        testEntity.setCssClass("default");
+        testEntity.setListClass("default");
+        testEntity.setIsDefault("Y");
+        testEntity.setStatus("0");
+        testEntity.setCreatedAt(LocalDateTime.now());
+        testEntity.setUpdatedAt(LocalDateTime.now());
+        
+        testDomain = new SysDictData();
+        testDomain.setId(1L);
+        testDomain.setDictSort(1);
+        testDomain.setDictLabel("正常");
+        testDomain.setDictValue("0");
+        testDomain.setDictType("user_status");
+        testDomain.setCssClass("default");
+        testDomain.setListClass("default");
+        testDomain.setIsDefault("Y");
+        testDomain.setStatus("0");
+        testDomain.setCreatedAt(LocalDateTime.now());
+        testDomain.setUpdatedAt(LocalDateTime.now());
+    }
+
+    @Test
+    void testToDomain() {
+        SysDictData result = converter.toDomain(testEntity);
+        
+        assertThat(result).isNotNull();
+        assertThat(result.getId()).isEqualTo(testEntity.getId());
+        assertThat(result.getDictSort()).isEqualTo(testEntity.getDictSort());
+        assertThat(result.getDictLabel()).isEqualTo(testEntity.getDictLabel());
+        assertThat(result.getDictValue()).isEqualTo(testEntity.getDictValue());
+        assertThat(result.getDictType()).isEqualTo(testEntity.getDictType());
+        assertThat(result.getCssClass()).isEqualTo(testEntity.getCssClass());
+        assertThat(result.getListClass()).isEqualTo(testEntity.getListClass());
+        assertThat(result.getIsDefault()).isEqualTo(testEntity.getIsDefault());
+        assertThat(result.getStatus()).isEqualTo(testEntity.getStatus());
+    }
+
+    @Test
+    void testToEntity() {
+        SysDictDataEntity result = converter.toEntity(testDomain);
+        
+        assertThat(result).isNotNull();
+        assertThat(result.getId()).isEqualTo(testDomain.getId());
+        assertThat(result.getDictSort()).isEqualTo(testDomain.getDictSort());
+        assertThat(result.getDictLabel()).isEqualTo(testDomain.getDictLabel());
+        assertThat(result.getDictValue()).isEqualTo(testDomain.getDictValue());
+        assertThat(result.getDictType()).isEqualTo(testDomain.getDictType());
+        assertThat(result.getCssClass()).isEqualTo(testDomain.getCssClass());
+        assertThat(result.getListClass()).isEqualTo(testDomain.getListClass());
+        assertThat(result.getIsDefault()).isEqualTo(testDomain.getIsDefault());
+        assertThat(result.getStatus()).isEqualTo(testDomain.getStatus());
+    }
+
+    @Test
+    void testToDomainWithNull() {
+        SysDictData result = converter.toDomain(null);
+        assertThat(result).isNull();
+    }
+
+    @Test
+    void testToEntityWithNull() {
+        SysDictDataEntity result = converter.toEntity(null);
+        assertThat(result).isNull();
+    }
+}
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