diff --git a/kernel/av/av.go b/kernel/av/av.go
index 9c616d673..6b2a55899 100644
--- a/kernel/av/av.go
+++ b/kernel/av/av.go
@@ -65,6 +65,7 @@ const (
 	KeyTypeURL     KeyType = "url"
 	KeyTypeEmail   KeyType = "email"
 	KeyTypePhone   KeyType = "phone"
+	KeyTypeMAsset  KeyType = "mAsset"
 )
 
 // Key 描述了属性视图属性列的基础结构。
@@ -107,6 +108,7 @@ type Value struct {
 	URL     *ValueURL      `json:"url,omitempty"`
 	Email   *ValueEmail    `json:"email,omitempty"`
 	Phone   *ValuePhone    `json:"phone,omitempty"`
+	MAsset  []*ValueAsset  `json:"mAsset,omitempty"`
 }
 
 func (value *Value) String() string {
@@ -131,6 +133,12 @@ func (value *Value) String() string {
 		return value.Email.Content
 	case KeyTypePhone:
 		return value.Phone.Content
+	case KeyTypeMAsset:
+		var ret []string
+		for _, v := range value.MAsset {
+			ret = append(ret, v.Content)
+		}
+		return strings.Join(ret, " ")
 	default:
 		return ""
 	}
@@ -324,6 +332,19 @@ type ValuePhone struct {
 	Content string `json:"content"`
 }
 
+type AssetType string
+
+const (
+	AssetTypeFile  = "file"
+	AssetTypeImage = "image"
+)
+
+type ValueAsset struct {
+	Type    AssetType `json:"type"`
+	Name    string    `json:"name"`
+	Content string    `json:"content"`
+}
+
 // View 描述了视图的结构。
 type View struct {
 	ID   string `json:"id"`   // 视图 ID
diff --git a/kernel/av/table.go b/kernel/av/table.go
index b774d109e..6bc97e8bc 100644
--- a/kernel/av/table.go
+++ b/kernel/av/table.go
@@ -132,6 +132,17 @@ func (value *Value) Compare(other *Value) int {
 	if nil != value.Phone && nil != other.Phone {
 		return strings.Compare(value.Phone.Content, other.Phone.Content)
 	}
+	if nil != value.MAsset && nil != other.MAsset {
+		var v1 string
+		for _, v := range value.MAsset {
+			v1 += v.Content
+		}
+		var v2 string
+		for _, v := range other.MAsset {
+			v2 += v.Content
+		}
+		return strings.Compare(v1, v2)
+	}
 	return 0
 }
 
@@ -328,6 +339,36 @@ func (value *Value) CompareOperator(other *Value, operator FilterOperator) bool
 		}
 	}
 
+	if nil != value.MAsset && nil != other.MAsset && 0 < len(value.MAsset) && 0 < len(other.MAsset) {
+		switch operator {
+		case FilterOperatorIsEqual, FilterOperatorContains:
+			contains := false
+			for _, v := range value.MAsset {
+				for _, v2 := range other.MAsset {
+					if v.Content == v2.Content {
+						contains = true
+						break
+					}
+				}
+			}
+			return contains
+		case FilterOperatorIsNotEqual, FilterOperatorDoesNotContain:
+			contains := false
+			for _, v := range value.MAsset {
+				for _, v2 := range other.MAsset {
+					if v.Content == v2.Content {
+						contains = true
+						break
+					}
+				}
+			}
+			return !contains
+		case FilterOperatorIsEmpty:
+			return 0 == len(value.MAsset) || 1 == len(value.MAsset) && "" == value.MAsset[0].Content
+		case FilterOperatorIsNotEmpty:
+			return 0 != len(value.MAsset) && !(1 == len(value.MAsset) && "" == value.MAsset[0].Content)
+		}
+	}
 	return true
 }
 
@@ -466,6 +507,73 @@ func (table *Table) CalcCols() {
 			table.calcColEmail(col, i)
 		case KeyTypePhone:
 			table.calcColPhone(col, i)
+		case KeyTypeMAsset:
+			table.calcColMAsset(col, i)
+		}
+	}
+}
+
+func (table *Table) calcColMAsset(col *TableColumn, colIndex int) {
+	switch col.Calc.Operator {
+	case CalcOperatorCountAll:
+		col.Calc.Result = &Value{Number: NewFormattedValueNumber(float64(len(table.Rows)), NumberFormatNone)}
+	case CalcOperatorCountValues:
+		countValues := 0
+		for _, row := range table.Rows {
+			if nil != row.Cells[colIndex] && nil != row.Cells[colIndex].Value && nil != row.Cells[colIndex].Value.MAsset && 0 < len(row.Cells[colIndex].Value.MAsset) {
+				countValues += len(row.Cells[colIndex].Value.MAsset)
+			}
+		}
+		col.Calc.Result = &Value{Number: NewFormattedValueNumber(float64(countValues), NumberFormatNone)}
+	case CalcOperatorCountUniqueValues:
+		countUniqueValues := 0
+		uniqueValues := map[string]bool{}
+		for _, row := range table.Rows {
+			if nil != row.Cells[colIndex] && nil != row.Cells[colIndex].Value && nil != row.Cells[colIndex].Value.MAsset && 0 < len(row.Cells[colIndex].Value.MAsset) {
+				for _, sel := range row.Cells[colIndex].Value.MAsset {
+					if _, ok := uniqueValues[sel.Content]; !ok {
+						uniqueValues[sel.Content] = true
+						countUniqueValues++
+					}
+				}
+			}
+		}
+		col.Calc.Result = &Value{Number: NewFormattedValueNumber(float64(countUniqueValues), NumberFormatNone)}
+	case CalcOperatorCountEmpty:
+		countEmpty := 0
+		for _, row := range table.Rows {
+			if nil == row.Cells[colIndex] || nil == row.Cells[colIndex].Value || nil == row.Cells[colIndex].Value.MAsset || 0 == len(row.Cells[colIndex].Value.MAsset) {
+				countEmpty++
+			}
+		}
+		col.Calc.Result = &Value{Number: NewFormattedValueNumber(float64(countEmpty), NumberFormatNone)}
+	case CalcOperatorCountNotEmpty:
+		countNotEmpty := 0
+		for _, row := range table.Rows {
+			if nil != row.Cells[colIndex] && nil != row.Cells[colIndex].Value && nil != row.Cells[colIndex].Value.MAsset && 0 < len(row.Cells[colIndex].Value.MAsset) {
+				countNotEmpty++
+			}
+		}
+		col.Calc.Result = &Value{Number: NewFormattedValueNumber(float64(countNotEmpty), NumberFormatNone)}
+	case CalcOperatorPercentEmpty:
+		countEmpty := 0
+		for _, row := range table.Rows {
+			if nil == row.Cells[colIndex] || nil == row.Cells[colIndex].Value || nil == row.Cells[colIndex].Value.MAsset || 0 == len(row.Cells[colIndex].Value.MAsset) {
+				countEmpty++
+			}
+		}
+		if 0 < len(table.Rows) {
+			col.Calc.Result = &Value{Number: NewFormattedValueNumber(float64(countEmpty)/float64(len(table.Rows)), NumberFormatPercent)}
+		}
+	case CalcOperatorPercentNotEmpty:
+		countNotEmpty := 0
+		for _, row := range table.Rows {
+			if nil != row.Cells[colIndex] && nil != row.Cells[colIndex].Value && nil != row.Cells[colIndex].Value.MAsset && 0 < len(row.Cells[colIndex].Value.MAsset) {
+				countNotEmpty++
+			}
+		}
+		if 0 < len(table.Rows) {
+			col.Calc.Result = &Value{Number: NewFormattedValueNumber(float64(countNotEmpty)/float64(len(table.Rows)), NumberFormatPercent)}
 		}
 	}
 }
@@ -807,32 +915,32 @@ func (table *Table) calcColNumber(col *TableColumn, colIndex int) {
 			col.Calc.Result = &Value{Number: NewFormattedValueNumber(min, col.NumberFormat)}
 		}
 	case CalcOperatorMax:
-		max := -math.MaxFloat64
+		maxVal := -math.MaxFloat64
 		for _, row := range table.Rows {
 			if nil != row.Cells[colIndex] && nil != row.Cells[colIndex].Value && nil != row.Cells[colIndex].Value.Number && row.Cells[colIndex].Value.Number.IsNotEmpty {
-				if row.Cells[colIndex].Value.Number.Content > max {
-					max = row.Cells[colIndex].Value.Number.Content
+				if row.Cells[colIndex].Value.Number.Content > maxVal {
+					maxVal = row.Cells[colIndex].Value.Number.Content
 				}
 			}
 		}
-		if -math.MaxFloat64 != max {
-			col.Calc.Result = &Value{Number: NewFormattedValueNumber(max, col.NumberFormat)}
+		if -math.MaxFloat64 != maxVal {
+			col.Calc.Result = &Value{Number: NewFormattedValueNumber(maxVal, col.NumberFormat)}
 		}
 	case CalcOperatorRange:
-		min := math.MaxFloat64
-		max := -math.MaxFloat64
+		minVal := math.MaxFloat64
+		maxVal := -math.MaxFloat64
 		for _, row := range table.Rows {
 			if nil != row.Cells[colIndex] && nil != row.Cells[colIndex].Value && nil != row.Cells[colIndex].Value.Number && row.Cells[colIndex].Value.Number.IsNotEmpty {
-				if row.Cells[colIndex].Value.Number.Content < min {
-					min = row.Cells[colIndex].Value.Number.Content
+				if row.Cells[colIndex].Value.Number.Content < minVal {
+					minVal = row.Cells[colIndex].Value.Number.Content
 				}
-				if row.Cells[colIndex].Value.Number.Content > max {
-					max = row.Cells[colIndex].Value.Number.Content
+				if row.Cells[colIndex].Value.Number.Content > maxVal {
+					maxVal = row.Cells[colIndex].Value.Number.Content
 				}
 			}
 		}
-		if math.MaxFloat64 != min && -math.MaxFloat64 != max {
-			col.Calc.Result = &Value{Number: NewFormattedValueNumber(max-min, col.NumberFormat)}
+		if math.MaxFloat64 != minVal && -math.MaxFloat64 != maxVal {
+			col.Calc.Result = &Value{Number: NewFormattedValueNumber(maxVal-minVal, col.NumberFormat)}
 		}
 	}
 }