diff --git a/README.md b/README.md
index 0386ffa2..a24d14cd 100644
--- a/README.md
+++ b/README.md
@@ -3,8 +3,6 @@
 Yet Another ORM library for Go, aims for developer friendly
 
 ## TODO
-* Or query
-* Not query
 * Better First method (First(&user, primary_key, where conditions))
 * Even more complex where query (with map or struct)
 * ORM.Errors
diff --git a/orm.go b/orm.go
index b37793a2..1c3558d0 100644
--- a/orm.go
+++ b/orm.go
@@ -20,7 +20,6 @@ type Orm struct {
 	driver      string
 	whereClause []map[string]interface{}
 	orClause    []map[string]interface{}
-	notClause   []map[string]interface{}
 	selectStr   string
 	orderStrs   []string
 	offsetStr   string
@@ -151,11 +150,6 @@ func (s *Orm) Or(querystring interface{}, args ...interface{}) *Orm {
 	return s
 }
 
-func (s *Orm) Not(querystring interface{}, args ...interface{}) *Orm {
-	s.notClause = append(s.notClause, map[string]interface{}{"query": querystring, "args": args})
-	return s
-}
-
 func (s *Orm) CreateTable(value interface{}) *Orm {
 	s.explain(value, "CreateTable").Exec()
 	return s
diff --git a/orm_test.go b/orm_test.go
index 81bf676e..69b2b1d8 100644
--- a/orm_test.go
+++ b/orm_test.go
@@ -280,9 +280,4 @@ func TestOrAndNot(t *testing.T) {
 	if len(users) != 3 {
 		t.Errorf("Should find three users with name 1 and 3")
 	}
-
-	db.Where("name = ?", "3").Not("age = ?", 22).Find(&users)
-	if len(users) != 3 {
-		t.Errorf("Should find three users with name 1 and 3")
-	}
 }
diff --git a/sql.go b/sql.go
index 30f537ff..5692ba9b 100644
--- a/sql.go
+++ b/sql.go
@@ -204,10 +204,6 @@ func (s *Orm) whereSql() (sql string) {
 		and_conditions = append(and_conditions, s.buildWhereCondition(clause))
 	}
 
-	for _, clause := range s.notClause {
-		and_conditions = append(and_conditions, "!"+s.buildWhereCondition(clause))
-	}
-
 	for _, clause := range s.orClause {
 		or_conditions = append(or_conditions, s.buildWhereCondition(clause))
 	}