diff --git a/core/src/main/java/net/rzdata/exception/NotExistDataException.java b/core/src/main/java/net/rzdata/exception/NotExistDataException.java
new file mode 100644
index 0000000..ab32ae1
--- /dev/null
+++ b/core/src/main/java/net/rzdata/exception/NotExistDataException.java
@@ -0,0 +1,18 @@
+package net.rzdata.exception;
+
+/**
+ * 操作不存在的数据异常
+ */
+public class NotExistDataException extends ClientException {
+
+    public static final String ERROR_CODE = "A0429";
+    public static final String ERROR_MESSAGE = "数据不存在";
+
+    public NotExistDataException() {
+        super(ERROR_CODE, ERROR_MESSAGE);
+    }
+
+    public NotExistDataException(String message) {
+        super(ERROR_CODE, message);
+    }
+}
diff --git a/service/system/src/main/java/net/rzdata/demo/dict/DictController.java b/service/system/src/main/java/net/rzdata/demo/dict/DictController.java
index e6d2ee3..71a9ed8 100644
--- a/service/system/src/main/java/net/rzdata/demo/dict/DictController.java
+++ b/service/system/src/main/java/net/rzdata/demo/dict/DictController.java
@@ -2,8 +2,10 @@ package net.rzdata.demo.dict;
 
 import net.rzdata.demo.dict.domain.AddDictReq;
 import net.rzdata.demo.dict.domain.Dict;
+import net.rzdata.demo.dict.domain.UpdateDictReq;
 import net.rzdata.domain.Id;
 import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.PutMapping;
 import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RestController;
 
@@ -18,7 +20,7 @@ public class DictController {
     }
 
     @PostMapping()
-    public Id addDictData(AddDictReq req) {
+    public Id addDict(AddDictReq req) {
         Dict dict = req.into();
         if (dict.getParentId() == null) {
             dict.setParentId(Dict.ROOT.getId());
@@ -27,4 +29,11 @@ public class DictController {
         dictService.addDict(dict);
         return Id.of(dict.getId());
     }
+
+    @PutMapping()
+    public Id updateDict(UpdateDictReq req) {
+        Dict dict = req.into();
+        dictService.updateDict(dict);
+        return Id.of(dict.getId());
+    }
 }
diff --git a/service/system/src/main/java/net/rzdata/demo/dict/DictService.java b/service/system/src/main/java/net/rzdata/demo/dict/DictService.java
index 86d790f..50d94a6 100644
--- a/service/system/src/main/java/net/rzdata/demo/dict/DictService.java
+++ b/service/system/src/main/java/net/rzdata/demo/dict/DictService.java
@@ -2,6 +2,7 @@ package net.rzdata.demo.dict;
 
 import net.rzdata.demo.dict.domain.Dict;
 import net.rzdata.demo.dict.mapper.DictRepository;
+import net.rzdata.exception.NotExistDataException;
 import net.rzdata.exception.RepeatDataException;
 import org.springframework.stereotype.Service;
 
@@ -19,10 +20,7 @@ public class DictService {
     }
 
     protected void addDict(Dict dict) {
-        Optional<Dict> exist = this.getDictByTypeAndValue(dict.getType(), dict.getValue());
-        if (exist.isPresent()) {
-            throw new RepeatDataException(String.format("字典类型:%s, 值:%s 已存在", dict.getType(), dict.getValue()));
-        }
+        check(dict);
         dictRepository.get().insert(dict);
     }
 
@@ -30,10 +28,32 @@ public class DictService {
         return dictRepository.findByTypeOrderBySortAsc(type);
     }
 
+    protected void updateDict(Dict dict) {
+        Dict exist = dictRepository.get().selectById(dict.getId());
+        if (exist == null) {
+            throw new NotExistDataException("字典已被删除，无法更新");
+        }
+        if (!Objects.equals(dict.getValue(), exist.getValue())) {
+            check(dict);
+        }
+        dictRepository.get().updateById(dict);
+        // 如果是字典类 则需要更新该类下所有值的type字段
+        if (Objects.equals(exist.getParentId(), Dict.ROOT.getId())) {
+            dictRepository.updateType(exist.getType(), dict.getType());
+        }
+    }
+
     private Optional<Dict> getDictByTypeAndValue(String type, String value) {
         List<Dict> dictList = this.getDictByType(type);
         return dictList.parallelStream()
             .filter(d -> Objects.equals(d.getValue(), value))
             .findAny();
     }
+
+    private void check(Dict dict) {
+        Optional<Dict> exist = this.getDictByTypeAndValue(dict.getType(), dict.getValue());
+        if (exist.isPresent()) {
+            throw new RepeatDataException(String.format("字典类型:%s, 值:%s 已存在", dict.getType(), dict.getValue()));
+        }
+    }
 }
diff --git a/service/system/src/main/java/net/rzdata/demo/dict/domain/UpdateDictReq.java b/service/system/src/main/java/net/rzdata/demo/dict/domain/UpdateDictReq.java
new file mode 100644
index 0000000..46f79a7
--- /dev/null
+++ b/service/system/src/main/java/net/rzdata/demo/dict/domain/UpdateDictReq.java
@@ -0,0 +1,56 @@
+package net.rzdata.demo.dict.domain;
+
+import lombok.Getter;
+import lombok.Setter;
+import lombok.ToString;
+import net.rzdata.trait.IConverter;
+import net.rzdata.trait.IQuery;
+import org.mapstruct.Mapper;
+import org.mapstruct.Mapping;
+import org.mapstruct.factory.Mappers;
+
+@Getter
+@Setter
+@ToString
+public class UpdateDictReq implements IQuery<Dict> {
+
+    /**
+     * 字典ID
+     */
+    private String id;
+    /**
+     * 字典标签
+     */
+    private String label;
+    /**
+     * 字典值
+     */
+    private String value;
+    /**
+     * 排序
+     */
+    private Integer sort;
+    /**
+     * 父级ID
+     */
+    private String parentId;
+    /**
+     * 是否禁用
+     */
+    private Boolean disabled;
+
+    public Dict into() {
+        return UpdateDictReqConverter.INSTANCE.convert(this);
+    }
+}
+
+@Mapper
+interface UpdateDictReqConverter extends IConverter<UpdateDictReq, Dict> {
+
+    UpdateDictReqConverter INSTANCE = Mappers.getMapper(UpdateDictReqConverter.class);
+
+    @Mapping(target = "type", ignore = true)
+    @Mapping(target = "children", ignore = true)
+    @Override
+    Dict convert(UpdateDictReq req);
+}
diff --git a/service/system/src/main/java/net/rzdata/demo/dict/mapper/DictRepository.java b/service/system/src/main/java/net/rzdata/demo/dict/mapper/DictRepository.java
index 4dbdf0b..9b86f1b 100644
--- a/service/system/src/main/java/net/rzdata/demo/dict/mapper/DictRepository.java
+++ b/service/system/src/main/java/net/rzdata/demo/dict/mapper/DictRepository.java
@@ -1,6 +1,7 @@
 package net.rzdata.demo.dict.mapper;
 
 import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
+import com.baomidou.mybatisplus.core.conditions.update.LambdaUpdateWrapper;
 import net.rzdata.demo.dict.domain.Dict;
 import net.rzdata.demo.trait.BaseRepository;
 import org.springframework.stereotype.Repository;
@@ -20,4 +21,11 @@ public class DictRepository extends BaseRepository<Dict, DictMapper> {
             .orderByAsc(Dict::getSort)
         );
     }
+
+    public int updateType(String oldValue, String newValue) {
+        return this.get().update(null, new LambdaUpdateWrapper<Dict>()
+            .set(Dict::getType, newValue)
+            .eq(Dict::getType, oldValue)
+        );
+    }
 }