diff --git a/src/menu/modules/demo-playground.js b/src/menu/modules/demo-playground.js
index acc3c425..2694de35 100644
--- a/src/menu/modules/demo-playground.js
+++ b/src/menu/modules/demo-playground.js
@@ -40,7 +40,9 @@ export default {
       title: '数据持久化',
       icon: 'database',
       children: [
-        { path: `${pre}db/util`, title: 'db.util', icon: 'cube' }
+        { path: `${pre}db/all`, title: '全部数据', icon: 'table' },
+        { path: `${pre}db/user`, title: '用户数据', icon: 'user' },
+        { path: `${pre}db/public`, title: '公用数据', icon: 'users' }
       ]
     },
     {
diff --git a/src/pages/demo/playground/db/all/index.vue b/src/pages/demo/playground/db/all/index.vue
new file mode 100644
index 00000000..93ecdf33
--- /dev/null
+++ b/src/pages/demo/playground/db/all/index.vue
@@ -0,0 +1,29 @@
+<template>
+  <d2-container class="page">
+    <template slot="header">
+      <el-button type="primary" @click="load">
+        重新获取本地数据
+      </el-button>
+    </template>
+    <d2-highlight :code="dbData"/>
+  </d2-container>
+</template>
+
+<script>
+import db from '@/libs/db.js'
+export default {
+  data () {
+    return {
+      dbData: ''
+    }
+  },
+  mounted () {
+    this.load()
+  },
+  methods: {
+    load () {
+      this.dbData = JSON.stringify(db.value(), null, 2)
+    }
+  }
+}
+</script>
diff --git a/src/pages/demo/playground/db/public/index.vue b/src/pages/demo/playground/db/public/index.vue
new file mode 100644
index 00000000..5178f9ee
--- /dev/null
+++ b/src/pages/demo/playground/db/public/index.vue
@@ -0,0 +1,118 @@
+<template>
+  <d2-container class="page">
+    <template slot="header">持久化存储公用数据（所有用户共享）</template>
+    <el-row>
+      <el-col :span="12">
+        <p class="d2-mt-0">增加不重复字段</p>
+        <el-button @click="handleSetRandom">增加</el-button>
+        <p>增加自定义字段</p>
+        <el-input v-model="keyNameToSet" placeholder="字段名" class="d2-mr-5" style="width: 100px;"/>
+        <el-input v-model="valueToSet" placeholder="值" class="d2-mr-5" style="width: 100px;"/>
+        <el-button @click="handleSet">增加</el-button>
+        <p>删除字段</p>
+        <el-select
+          v-model="keyNameToDelete"
+          placeholder="请选择要删除的 key">
+          <el-option
+            v-for="item in keyNameList"
+            :key="item.value"
+            :label="item.label"
+            :value="item.value">
+          </el-option>
+        </el-select>
+        <p>清空当前用户数据</p>
+        <el-button @click="handleClear">清空</el-button>
+      </el-col>
+      <el-col :span="12">
+        <d2-highlight :code="dataDisplay"/>
+      </el-col>
+    </el-row>
+  </d2-container>
+</template>
+
+<script>
+import day from 'dayjs'
+import { mapActions } from 'vuex'
+export default {
+  data () {
+    return {
+      dataDisplay: '',
+      keyNameToSet: '',
+      valueToSet: '',
+      keyNameList: [],
+      keyNameToDelete: ''
+    }
+  },
+  watch: {
+    keyNameToDelete (value) {
+      if (value) {
+        this.handleDelete(value)
+      }
+    }
+  },
+  mounted () {
+    this.load()
+  },
+  methods: {
+    ...mapActions('d2admin/db', [
+      'database',
+      'databaseClear'
+    ]),
+    /**
+     * 加载本地数据
+     */
+    async load () {
+      const db = await this.database()
+      this.dataDisplay = JSON.stringify(db.value(), null, 2)
+      this.keyNameList = Object.keys(db.value()).map(k => ({
+        value: k,
+        label: k
+      }))
+    },
+    /**
+     * 删除一个字段
+     */
+    async handleDelete (name) {
+      const db = await this.database()
+      db
+        .unset(name)
+        .write()
+      this.load()
+      this.keyNameToDelete = ''
+    },
+    /**
+     * 清空当前用户的数据
+     */
+    async handleClear () {
+      const db = await this.databaseClear()
+      // db 是已经清空了的数据库对象
+      this.load()
+    },
+    /**
+     * 添加一个数据
+     */
+    async handleSet () {
+      if (this.keyNameToSet === '') {
+        this.$message.error('字段名不能为空')
+        return
+      }
+      const db = await this.database()
+      db
+        .set(this.keyNameToSet, this.valueToSet)
+        .write()
+      this.load()
+    },
+    /**
+     * 添加一个随机数据
+     */
+    async handleSetRandom () {
+      const id = day().valueOf()
+      const db = await this.database()
+      db
+        .set(id, Math.round(id * Math.random()))
+        .write()
+      this.load()
+    }
+  }
+}
+</script>
diff --git a/src/pages/demo/playground/db/user/index.vue b/src/pages/demo/playground/db/user/index.vue
new file mode 100644
index 00000000..aaf60a8d
--- /dev/null
+++ b/src/pages/demo/playground/db/user/index.vue
@@ -0,0 +1,118 @@
+<template>
+  <d2-container class="page">
+    <template slot="header">持久化存储用户数据（用户区分存储）</template>
+    <el-row>
+      <el-col :span="12">
+        <p class="d2-mt-0">增加不重复字段</p>
+        <el-button @click="handleSetRandom">增加</el-button>
+        <p>增加自定义字段</p>
+        <el-input v-model="keyNameToSet" placeholder="字段名" class="d2-mr-5" style="width: 100px;"/>
+        <el-input v-model="valueToSet" placeholder="值" class="d2-mr-5" style="width: 100px;"/>
+        <el-button @click="handleSet">增加</el-button>
+        <p>删除字段</p>
+        <el-select
+          v-model="keyNameToDelete"
+          placeholder="请选择要删除的 key">
+          <el-option
+            v-for="item in keyNameList"
+            :key="item.value"
+            :label="item.label"
+            :value="item.value">
+          </el-option>
+        </el-select>
+        <p>清空当前用户数据</p>
+        <el-button @click="handleClear">清空</el-button>
+      </el-col>
+      <el-col :span="12">
+        <d2-highlight :code="dataDisplay"/>
+      </el-col>
+    </el-row>
+  </d2-container>
+</template>
+
+<script>
+import day from 'dayjs'
+import { mapActions } from 'vuex'
+export default {
+  data () {
+    return {
+      dataDisplay: '',
+      keyNameToSet: '',
+      valueToSet: '',
+      keyNameList: [],
+      keyNameToDelete: ''
+    }
+  },
+  watch: {
+    keyNameToDelete (value) {
+      if (value) {
+        this.handleDelete(value)
+      }
+    }
+  },
+  mounted () {
+    this.load()
+  },
+  methods: {
+    ...mapActions('d2admin/db', [
+      'databaseByUser',
+      'databaseByUserClear'
+    ]),
+    /**
+     * 加载本地数据
+     */
+    async load () {
+      const db = await this.databaseByUser()
+      this.dataDisplay = JSON.stringify(db.value(), null, 2)
+      this.keyNameList = Object.keys(db.value()).map(k => ({
+        value: k,
+        label: k
+      }))
+    },
+    /**
+     * 删除一个字段
+     */
+    async handleDelete (name) {
+      const db = await this.databaseByUser()
+      db
+        .unset(name)
+        .write()
+      this.load()
+      this.keyNameToDelete = ''
+    },
+    /**
+     * 清空当前用户的数据
+     */
+    async handleClear () {
+      const db = await this.databaseByUserClear()
+      // db 是已经清空了的数据库对象
+      this.load()
+    },
+    /**
+     * 添加一个数据
+     */
+    async handleSet () {
+      if (this.keyNameToSet === '') {
+        this.$message.error('字段名不能为空')
+        return
+      }
+      const db = await this.databaseByUser()
+      db
+        .set(this.keyNameToSet, this.valueToSet)
+        .write()
+      this.load()
+    },
+    /**
+     * 添加一个随机数据
+     */
+    async handleSetRandom () {
+      const id = day().valueOf()
+      const db = await this.databaseByUser()
+      db
+        .set(id, Math.round(id * Math.random()))
+        .write()
+      this.load()
+    }
+  }
+}
+</script>
diff --git a/src/pages/demo/playground/db/util/index.vue b/src/pages/demo/playground/db/util/index.vue
deleted file mode 100644
index 93efcb3b..00000000
--- a/src/pages/demo/playground/db/util/index.vue
+++ /dev/null
@@ -1,116 +0,0 @@
-<template>
-  <d2-container>
-    <template slot="header">header</template>
-    <el-alert
-      :title="alertTitle"
-      type="success"
-      :closable="false"
-      class="d2-mb"/>
-    <el-row :gutter="10">
-      <el-col :span="12">
-        <el-row :gutter="10">
-          <el-col :span="12">
-            <p class="d2-mt-0">dbName</p>
-            <el-input v-model="dbName" placeholder="dbName" disabled/>
-          </el-col>
-          <el-col :span="12">
-            <p class="d2-mt-0">path</p>
-            <el-input v-model="path" placeholder="path" disabled/>
-          </el-col>
-        </el-row>
-        <el-row :gutter="10">
-          <el-col :span="12">
-            <p>key</p>
-            <el-input v-model="key" placeholder="key"/>
-          </el-col>
-          <el-col :span="12">
-            <p>value</p>
-            <el-input v-model="value" placeholder="value"/>
-          </el-col>
-        </el-row>
-        <p>存储</p>
-        <el-button @click="handleSet" class="d2-mb-10">保存 {{key}} = "{{value}}"</el-button>
-        <br>
-        <el-button @click="handleSetByUser">保存 {{key}} = "{{value}}" 当前用户</el-button>
-        <p>取值</p>
-        <el-button @click="handleGet" class="d2-mb-10">取值 key = "{{key}}"</el-button>
-        <br>
-        <el-button @click="handleGetByUser">取值 key = "{{key}}" 当前用户</el-button>
-      </el-col>
-      <el-col :span="12">
-        <el-card shadow="never">
-          <template slot="header">db.get('{{dbName}}').value()</template>
-          <div style="height: 400px; overflow: auto;">
-            <d2-highlight :code="dbData"/>
-          </div>
-        </el-card>
-      </el-col>
-    </el-row>
-  </d2-container>
-</template>
-<script>
-import { mapMutations, mapActions } from 'vuex'
-import db from '@/libs/db.js'
-export default {
-  data () {
-    return {
-      dbName: 'db',
-      path: 'demo-playground-db-util',
-      key: 'demoKey',
-      value: 'demo text',
-      dbData: ''
-    }
-  },
-  mounted () {
-    this.load()
-  },
-  computed: {
-    alertTitle () {
-      return `依据当前设置，数据将会在 "${this.dbName}" 数据库下的 "${this.path}.${this.key}" 路径下更新，请在右侧数据中查看`
-    }
-  },
-  methods: {
-    ...mapMutations('d2admin/db', [
-      'set',
-      'setByUser'
-    ]),
-    ...mapActions('d2admin/db', [
-      'get',
-      'getByUser'
-    ]),
-    load () {
-      this.dbData = JSON.stringify(db.get(this.dbName).value(), null, 2)
-    },
-    handleSet () {
-      this.set({
-        dbName: this.dbName,
-        path: `${this.path}.${this.key}`,
-        value: this.value
-      })
-      this.load()
-    },
-    handleSetByUser () {
-      this.setByUser({
-        dbName: this.dbName,
-        path: `${this.path}.${this.key}`,
-        value: this.value
-      })
-      this.load()
-    },
-    async handleGet () {
-      const value = await this.get({
-        dbName: this.dbName,
-        path: `${this.path}.${this.key}`
-      })
-      this.$alert(`value: ${value}`, `${this.dbName}.${this.path}.${this.key}`)
-    },
-    async handleGetByUser () {
-      const value = await this.getByUser({
-        dbName: this.dbName,
-        path: `${this.path}.${this.key}`
-      })
-      this.$alert(`value: ${value}`, `${this.dbName}.${this.path}.${this.key}`)
-    }
-  }
-}
-</script>
diff --git a/src/router/routes.js.REMOVED.git-id b/src/router/routes.js.REMOVED.git-id
index 87fea966..66314f5e 100644
--- a/src/router/routes.js.REMOVED.git-id
+++ b/src/router/routes.js.REMOVED.git-id
@@ -1 +1 @@
-16b7e123957b7e4ef7d5c6270616b8f00d2dd381
\ No newline at end of file
+ca12a11b6d9d0552250eb2da1e7bac555902f68d
\ No newline at end of file
diff --git a/src/store/modules/d2admin/modules/db.js b/src/store/modules/d2admin/modules/db.js
index 0e596a69..c6c8d8c3 100644
--- a/src/store/modules/d2admin/modules/db.js
+++ b/src/store/modules/d2admin/modules/db.js
@@ -17,16 +17,15 @@ function pathInit ({
   validator = () => true,
   defaultValue = ''
 }) {
-  const sys = db.get(dbName)
   const uuid = util.cookies.get('uuid') || 'ghost-uuid'
-  const currentPath = `${user ? `user.${uuid}` : 'public'}.${path}`
-  const value = sys.get(currentPath).value()
+  const currentPath = `${dbName}.${user ? `user.${uuid}` : 'public'}${path ? `.${path}` : ''}`
+  const value = db.get(currentPath).value()
   if (!(value && validator(value))) {
-    sys
+    db
       .set(currentPath, defaultValue)
       .write()
   }
-  return `${dbName}.${currentPath}`
+  return currentPath
 }
 
 export default {
@@ -71,6 +70,56 @@ export default {
     }
   },
   actions: {
+    /**
+     * @description 获取存储数据库对象
+     */
+    database () {
+      return new Promise(resolve => {
+        resolve(db.get(pathInit({
+          dbName: 'database',
+          user: false,
+          defaultValue: {}
+        })))
+      })
+    },
+    /**
+     * @description 清空存储数据库对象
+     */
+    databaseClear () {
+      return new Promise(resolve => {
+        resolve(db.get(pathInit({
+          dbName: 'database',
+          user: false,
+          validator: () => false,
+          defaultValue: {}
+        })))
+      })
+    },
+    /**
+     * @description 获取存储数据库对象 [区分用户]
+     */
+    databaseByUser () {
+      return new Promise(resolve => {
+        resolve(db.get(pathInit({
+          dbName: 'database',
+          user: true,
+          defaultValue: {}
+        })))
+      })
+    },
+    /**
+     * @description 清空存储数据库对象 [区分用户]
+     */
+    databaseByUserClear () {
+      return new Promise(resolve => {
+        resolve(db.get(pathInit({
+          dbName: 'database',
+          user: true,
+          validator: () => false,
+          defaultValue: {}
+        })))
+      })
+    },
     /**
      * @description 获取数据
      * @description 效果类似于 dbName.path || defaultValue
@@ -84,7 +133,7 @@ export default {
       path = '',
       defaultValue = ''
     }) {
-      return new Promise((resolve, reject) => {
+      return new Promise(resolve => {
         resolve(db.get(pathInit({
           dbName,
           path,