diff --git a/builder/builder.go b/builder/builder.go
index 0dc447b..942a8ed 100644
--- a/builder/builder.go
+++ b/builder/builder.go
@@ -244,24 +244,35 @@ func getWhereConditions(where map[string]interface{}, ignoreKeys map[string]stru
 		}
 		if key == "_or" {
 			var (
-				orWheres          []map[string]interface{}
-				orWhereComparable []Comparable
-				ok                bool
+				orWheres  []map[string]interface{}
+				_orWheres [][]map[string]interface{}
+				ok        bool
 			)
+
 			if orWheres, ok = val.([]map[string]interface{}); !ok {
-				return nil, errOrValueType
-			}
-			for _, orWhere := range orWheres {
-				if orWhere == nil {
-					continue
+				if _orWheres, ok = val.([][]map[string]interface{}); !ok {
+					return nil, errOrValueType
 				}
-				orNestWhere, err := getWhereConditions(orWhere, ignoreKeys)
-				if nil != err {
-					return nil, err
+			} else {
+				_orWheres = [][]map[string]interface{}{orWheres}
+			}
+
+			var multiOrWhereComparable []Comparable
+			for _, orWheres := range _orWheres {
+				var orWhereComparable []Comparable
+				for _, orWhere := range orWheres {
+					if orWhere == nil {
+						continue
+					}
+					orNestWhere, err := getWhereConditions(orWhere, ignoreKeys)
+					if nil != err {
+						return nil, err
+					}
+					orWhereComparable = append(orWhereComparable, NestWhere(orNestWhere))
 				}
-				orWhereComparable = append(orWhereComparable, NestWhere(orNestWhere))
+				multiOrWhereComparable = append(multiOrWhereComparable, OrWhere(orWhereComparable))
 			}
-			comparables = append(comparables, OrWhere(orWhereComparable))
+			comparables = append(comparables, multiOrWhereComparable...)
 			continue
 		}
 		field, operator, err = splitKey(key, val)
diff --git a/builder/builder_test.go b/builder/builder_test.go
index 54ae426..fdefb37 100644
--- a/builder/builder_test.go
+++ b/builder/builder_test.go
@@ -427,14 +427,14 @@ func Test_BuildUpdate(t *testing.T) {
 					"foo":    "bar",
 					"age >=": 23,
 					"sex in": []interface{}{"male", "female"},
-					"_or": []map[string]interface{}{
+					"_or": [][]map[string]interface{}{
 						{
-							"x1":    11,
-							"x2 >=": 45,
+							{"x1": 11, "x2 >=": 45},
+							{"x3": "234", "x4 <>": "tx2"},
 						},
 						{
-							"x3":    "234",
-							"x4 <>": "tx2",
+							{"id": "11"},
+							{"act_id": "11"},
 						},
 					},
 				},
@@ -444,8 +444,8 @@ func Test_BuildUpdate(t *testing.T) {
 				},
 			},
 			out: outStruct{
-				cond: "UPDATE tb SET district=?,score=? WHERE (((x1=? AND x2>=?) OR (x3=? AND x4!=?)) AND foo=? AND sex IN (?,?) AND age>=?)",
-				vals: []interface{}{"010", 50, 11, 45, "234", "tx2", "bar", "male", "female", 23},
+				cond: "UPDATE tb SET district=?,score=? WHERE (((x1=? AND x2>=?) OR (x3=? AND x4!=?)) AND ((id=?) OR (act_id=?)) AND foo=? AND sex IN (?,?) AND age>=?)",
+				vals: []interface{}{"010", 50, 11, 45, "234", "tx2", "11", "11", "bar", "male", "female", 23},
 				err:  nil,
 			},
 		},