diff --git a/API.md b/API.md
index 0c8ba3877..48a386fa2 100644
--- a/API.md
+++ b/API.md
@@ -38,6 +38,7 @@
 * [File](#File)
     * [Get file](#Get-file)
     * [Put file](#Put-file)
+    * [Remove file](#Remove-file)
 * [Export](#Export)
     * [Export Markdown](#Export-Markdown)
 * [Notification](#Notification)
@@ -439,7 +440,7 @@ View API token in <kbd>Settings - About</kbd>, request header: `Authorization: T
   }
   ```
 
-    * `id`：Block ID
+    * `id`: Block ID
 * Return value
 
   ```json
@@ -854,7 +855,7 @@ View API token in <kbd>Settings - About</kbd>, request header: `Authorization: T
     * `isDir`: whether to create a folder, when `true` only create a folder, ignore `file`
     * `modTime`: last access and modification time, Unix time
     * `file`: the uploaded file
-* return value
+* Return value
 
    ```json
    {
@@ -864,6 +865,28 @@ View API token in <kbd>Settings - About</kbd>, request header: `Authorization: T
    }
    ```
 
+### Remove file
+
+* `/api/file/removeFile`
+* Parameters
+
+  ```json
+  {
+    "path": "/data/20210808180117-6v0mkxr/20200923234011-ieuun1p.sy"
+  }
+  ```
+  * `path`: the file path under the workspace path
+* Return value
+
+  ```json
+  {
+    "code": 0,
+    "msg": "",
+    "data": null
+  }
+  ```
+
+
 ## Export
 
 ### Export Markdown
@@ -946,7 +969,7 @@ View API token in <kbd>Settings - About</kbd>, request header: `Authorization: T
     }
   }
   ```
-    * `id`：Message ID
+    * `id`: Message ID
 
 ## System
 
diff --git a/API_zh_CN.md b/API_zh_CN.md
index c77c5818b..13be50e40 100644
--- a/API_zh_CN.md
+++ b/API_zh_CN.md
@@ -38,6 +38,7 @@
 * [文件](#文件)
     * [获取文件](#获取文件)
     * [写入文件](#写入文件)
+    * [删除文件](#删除文件)
 * [导出](#导出)
     * [导出 Markdown 文本](#导出-markdown-文本)
 * [通知](#通知)
@@ -858,6 +859,27 @@
   }
   ```
 
+### 删除文件
+
+* `/api/file/removeFile`
+* 参数
+
+  ```json
+  {
+    "path": "/data/20210808180117-6v0mkxr/20200923234011-ieuun1p.sy"
+  }
+  ```
+  * `path`：工作空间路径下的文件路径
+* 返回值
+
+  ```json
+  {
+    "code": 0,
+    "msg": "",
+    "data": null
+  }
+  ```
+
 ## 导出
 
 ### 导出 Markdown 文本
diff --git a/kernel/api/file.go b/kernel/api/file.go
index db92708da..c63b0ad2c 100644
--- a/kernel/api/file.go
+++ b/kernel/api/file.go
@@ -110,6 +110,33 @@ func getFile(c *gin.Context) {
 	}
 }
 
+func removeFile(c *gin.Context) {
+	ret := gulu.Ret.NewResult()
+	arg, ok := util.JsonArg(c, ret)
+	if !ok {
+		c.JSON(http.StatusOK, ret)
+		return
+	}
+
+	filePath := arg["path"].(string)
+	filePath = filepath.Join(util.WorkspaceDir, filePath)
+	_, err := os.Stat(filePath)
+	if os.IsNotExist(err) {
+		c.Status(404)
+		return
+	}
+	if nil != err {
+		logging.LogErrorf("stat [%s] failed: %s", filePath, err)
+		c.Status(500)
+		return
+	}
+
+	if err = os.RemoveAll(filePath); nil != err {
+		c.Status(500)
+		return
+	}
+}
+
 func putFile(c *gin.Context) {
 	ret := gulu.Ret.NewResult()
 	defer c.JSON(http.StatusOK, ret)
diff --git a/kernel/api/router.go b/kernel/api/router.go
index 6e56ac488..8431c5a5a 100644
--- a/kernel/api/router.go
+++ b/kernel/api/router.go
@@ -175,6 +175,7 @@ func ServeAPI(ginServer *gin.Engine) {
 	ginServer.Handle("POST", "/api/file/getFile", model.CheckAuth, getFile)
 	ginServer.Handle("POST", "/api/file/putFile", model.CheckAuth, model.CheckReadonly, putFile)
 	ginServer.Handle("POST", "/api/file/copyFile", model.CheckAuth, model.CheckReadonly, copyFile)
+	ginServer.Handle("POST", "/api/file/removeFile", model.CheckAuth, model.CheckReadonly, removeFile)
 
 	ginServer.Handle("POST", "/api/ref/refreshBacklink", model.CheckAuth, refreshBacklink)
 	ginServer.Handle("POST", "/api/ref/getBacklink", model.CheckAuth, getBacklink)
diff --git a/kernel/av/av.go b/kernel/av/av.go
index cad928641..f31381ceb 100644
--- a/kernel/av/av.go
+++ b/kernel/av/av.go
@@ -54,7 +54,7 @@ func NewAttributeView(id string) *AttributeView {
 	return &AttributeView{
 		Spec:        0,
 		ID:          id,
-		Columns:     []*Column{&Column{ID: ast.NewNodeID(), Name: "Block", Type: ColumnTypeBlock}},
+		Columns:     []*Column{{ID: ast.NewNodeID(), Name: "Block", Type: ColumnTypeBlock}},
 		Rows:        []*Row{},
 		Type:        AttributeViewTypeTable,
 		Projections: []string{},
diff --git a/kernel/model/attribute_view.go b/kernel/model/attribute_view.go
index 542a6524e..6ea9933d7 100644
--- a/kernel/model/attribute_view.go
+++ b/kernel/model/attribute_view.go
@@ -73,7 +73,23 @@ func (tx *Transaction) doRemoveAttrViewBlock(operation *Operation) (ret *TxErr)
 	return
 }
 
-func AddAttributeViewColumn(name string, typ string, columnIndex int, avID string) (err error) {
+func (tx *Transaction) doAddAttrViewColumn(operation *Operation) (ret *TxErr) {
+	err := addAttributeViewColumn(operation.Name, operation.Typ, 1024, operation.ParentID)
+	if nil != err {
+		return &TxErr{code: TxErrWriteAttributeView, id: operation.ParentID, msg: err.Error()}
+	}
+	return
+}
+
+func (tx *Transaction) doRemoveAttrViewColumn(operation *Operation) (ret *TxErr) {
+	err := removeAttributeViewColumn(operation.ID, operation.ParentID)
+	if nil != err {
+		return &TxErr{code: TxErrWriteAttributeView, id: operation.ParentID, msg: err.Error()}
+	}
+	return
+}
+
+func addAttributeViewColumn(name string, typ string, columnIndex int, avID string) (err error) {
 	attrView, err := av.ParseAttributeView(avID)
 	if nil != err {
 		return
@@ -81,7 +97,7 @@ func AddAttributeViewColumn(name string, typ string, columnIndex int, avID strin
 
 	switch av.ColumnType(typ) {
 	case av.ColumnTypeText:
-		attrView.InsertColumn(columnIndex, &av.Column{ID: ast.NewNodeID(), Name: name, Type: av.ColumnTypeText})
+		attrView.InsertColumn(columnIndex, &av.Column{ID: "av" + ast.NewNodeID(), Name: name, Type: av.ColumnTypeText})
 	default:
 		msg := fmt.Sprintf("invalid column type [%s]", typ)
 		logging.LogErrorf(msg)
@@ -93,6 +109,23 @@ func AddAttributeViewColumn(name string, typ string, columnIndex int, avID strin
 	return
 }
 
+func removeAttributeViewColumn(columnID string, avID string) (err error) {
+	attrView, err := av.ParseAttributeView(avID)
+	if nil != err {
+		return
+	}
+
+	for i, column := range attrView.Columns[1:] {
+		if column.ID == columnID {
+			attrView.Columns = append(attrView.Columns[:i], attrView.Columns[i+1:]...)
+			break
+		}
+	}
+
+	err = av.SaveAttributeView(attrView)
+	return
+}
+
 func removeAttributeViewBlock(blockID, avID string, tree *parse.Tree, tx *Transaction) (err error) {
 	node := treenode.GetNodeInTree(tree, blockID)
 	if nil == node {
@@ -107,6 +140,7 @@ func removeAttributeViewBlock(blockID, avID string, tree *parse.Tree, tx *Transa
 
 	for i, row := range attrView.Rows {
 		if row.Cells[0].Value == blockID {
+			// 从行中移除，但是不移除属性
 			attrView.Rows = append(attrView.Rows[:i], attrView.Rows[i+1:]...)
 			break
 		}
@@ -150,11 +184,9 @@ func addAttributeViewBlock(blockID, avID string, tree *parse.Tree, tx *Transacti
 	row.Cells = append(row.Cells, &av.Cell{ID: ast.NewNodeID(), Value: blockID})
 	if 1 < len(attrView.Columns) {
 		// 将列作为属性添加到块中
-
 		attrs := parse.IAL2Map(node.KramdownIAL)
 		for _, col := range attrView.Columns[1:] {
-			colName := col.Name
-			attrs[colName] = ""
+			attrs["av"+col.ID] = ""
 		}
 
 		if err = setNodeAttrsWithTx(tx, node, tree, attrs); nil != err {
diff --git a/kernel/model/blockial.go b/kernel/model/blockial.go
index cf42e2ed6..222d9be73 100644
--- a/kernel/model/blockial.go
+++ b/kernel/model/blockial.go
@@ -19,13 +19,14 @@ package model
 import (
 	"errors"
 	"fmt"
-	"github.com/88250/lute/parse"
+	"strings"
 	"time"
 
 	"github.com/88250/gulu"
 	"github.com/88250/lute/ast"
 	"github.com/88250/lute/html"
 	"github.com/88250/lute/lex"
+	"github.com/88250/lute/parse"
 	"github.com/araddon/dateparse"
 	"github.com/siyuan-note/siyuan/kernel/cache"
 	"github.com/siyuan-note/siyuan/kernel/treenode"
@@ -166,6 +167,12 @@ func setNodeAttrs0(node *ast.Node, nameValues map[string]string) (oldAttrs map[s
 	}
 
 	for name, value := range nameValues {
+		if strings.HasPrefix(name, "av") {
+			// 属性视图设置的属性值可以为空
+			node.SetIALAttr(name, value)
+			continue
+		}
+
 		if "" == value {
 			node.RemoveIALAttr(name)
 		} else {
diff --git a/kernel/model/transaction.go b/kernel/model/transaction.go
index 1711ec7c7..4cc293200 100644
--- a/kernel/model/transaction.go
+++ b/kernel/model/transaction.go
@@ -218,6 +218,10 @@ func performTx(tx *Transaction) (ret *TxErr) {
 			ret = tx.doInsertAttrViewBlock(op)
 		case "removeAttrViewBlock":
 			ret = tx.doRemoveAttrViewBlock(op)
+		case "addAttrViewCol":
+			ret = tx.doAddAttrViewColumn(op)
+		case "removeAttrViewCol":
+			ret = tx.doRemoveAttrViewColumn(op)
 		}
 
 		if nil != ret {
@@ -1026,9 +1030,12 @@ type Operation struct {
 	ParentID   string      `json:"parentID"`
 	PreviousID string      `json:"previousID"`
 	NextID     string      `json:"nextID"`
-	SrcIDs     []string    `json:"srcIDs"` // 用于将块拖拽到属性视图中
 	RetData    interface{} `json:"retData"`
 
+	SrcIDs []string `json:"srcIDs"` // 用于将块拖拽到属性视图中
+	Name   string   `json:"name"`   // 用于属性视图列名
+	Typ    string   `json:"type"`   // 用于属性视图列类型
+
 	discard bool // 用于标识是否在事务合并中丢弃
 }