diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..62c8935
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+.idea/
\ No newline at end of file
diff --git a/builder/README.md b/builder/README.md
index d5f6285..2d555ff 100644
--- a/builder/README.md
+++ b/builder/README.md
@@ -77,8 +77,9 @@ operators supported:
 * !=
 * <>
 * in
-* not in`
+* not in
 * like
+* not like
 * between
 * not between
 
diff --git a/builder/builder.go b/builder/builder.go
index 6cc90c7..b5a3b72 100644
--- a/builder/builder.go
+++ b/builder/builder.go
@@ -249,6 +249,7 @@ const (
 	opLt         = "<"
 	opLte        = "<="
 	opLike       = "like"
+	opNotLike    = "not like"
 	opBetween    = "between"
 	opNotBetween = "not between"
 	// special
@@ -310,12 +311,15 @@ var op2Comparable = map[string]compareProducer{
 	opLike: func(m map[string]interface{}) (Comparable, error) {
 		return Like(m), nil
 	},
+	opNotLike: func(m map[string]interface{}) (Comparable, error) {
+		return NotLike(m), nil
+	},
 	opNull: func(m map[string]interface{}) (Comparable, error) {
 		return nullCompareble(m), nil
 	},
 }
 
-var opOrder = []string{opEq, opIn, opNe1, opNe2, opNotIn, opGt, opGte, opLt, opLte, opLike, opBetween, opNotBetween, opNull}
+var opOrder = []string{opEq, opIn, opNe1, opNe2, opNotIn, opGt, opGte, opLt, opLte, opLike, opNotLike, opBetween, opNotBetween, opNull}
 
 func buildWhereCondition(mapSet *whereMapSet) ([]Comparable, func(), error) {
 	cpArr, release := getCpPool()
@@ -379,10 +383,28 @@ func splitKey(key string) (field string, operator string, err error) {
 	} else {
 		field = key[:idx]
 		operator = strings.Trim(key[idx+1:], " ")
+		operator = removeInnerSpace(operator)
 	}
 	return
 }
 
+func removeInnerSpace(operator string) string {
+	n := len(operator)
+	firstSpace := strings.IndexByte(operator, ' ')
+	if firstSpace == -1 {
+		return operator
+	}
+	lastSpace := firstSpace
+	for i := firstSpace+1; i<n; i++ {
+		if operator[i] == ' ' {
+			lastSpace = i
+		} else {
+			break
+		}
+	}
+	return operator[:firstSpace] + operator[lastSpace:]
+}
+
 func splitOrderBy(orderby string) ([]eleOrderBy, error) {
 	var err error
 	var eleOrder []eleOrderBy
diff --git a/builder/builder_test.go b/builder/builder_test.go
index e6e9e6e..1e01f10 100644
--- a/builder/builder_test.go
+++ b/builder/builder_test.go
@@ -843,3 +843,28 @@ func TestBuildCombinedBetween(t *testing.T) {
 	ass.Equal(expectCond, cond)
 	ass.Equal([]interface{}{"caibirdme", "beijing", "chengdu", 3.5, 7.2, 10, 30}, vals)
 }
+
+func TestNotLike(t *testing.T) {
+	where := map[string]interface{}{
+		"name  not    like  ": "%ny",
+	}
+	cond, vals, err := BuildSelect("tb", where, nil)
+	ass := assert.New(t)
+	ass.NoError(err)
+	expectCond := `SELECT * FROM tb WHERE (name NOT LIKE ?)`
+	ass.Equal(expectCond, cond)
+	ass.Equal([]interface{}{"%ny"}, vals)
+}
+
+func TestNotLike_1(t *testing.T) {
+	where := map[string]interface{}{
+		"name  not like  ": "%ny",
+		"age": 20,
+	}
+	cond, vals, err := BuildSelect("tb", where, nil)
+	ass := assert.New(t)
+	ass.NoError(err)
+	expectCond := `SELECT * FROM tb WHERE (age=? AND name NOT LIKE ?)`
+	ass.Equal(expectCond, cond)
+	ass.Equal([]interface{}{20, "%ny"}, vals)
+}
diff --git a/builder/dao.go b/builder/dao.go
index 4f10432..17d57dc 100644
--- a/builder/dao.go
+++ b/builder/dao.go
@@ -97,6 +97,27 @@ func (l Like) Build() ([]string, []interface{}) {
 	return cond, vals
 }
 
+type NotLike map[string]interface{}
+
+// Build implements the Comparable interface
+func (l NotLike) Build() ([]string, []interface{}) {
+	if nil == l || 0 == len(l) {
+		return nil, nil
+	}
+	var cond []string
+	var vals []interface{}
+	for k := range l {
+		cond = append(cond, k)
+	}
+	defaultSortAlgorithm(cond)
+	for j := 0; j < len(cond); j++ {
+		val := l[cond[j]]
+		cond[j] = cond[j] + " NOT LIKE ?"
+		vals = append(vals, val)
+	}
+	return cond, vals
+}
+
 //Eq means equal(=)
 type Eq map[string]interface{}