diff --git a/component/trie/set_test.go b/component/trie/set_test.go
index 6672d885..62854a14 100644
--- a/component/trie/set_test.go
+++ b/component/trie/set_test.go
@@ -27,6 +27,7 @@ func TestDomainComplexWildcard(t *testing.T) {
 		"+.baidu.com",
 		"+.a.baidu.com",
 		"www.baidu.com",
+		"+.bb.baidu.com",
 		"test.a.net",
 		"test.a.oc",
 		"www.qq.com",
@@ -40,8 +41,8 @@ func TestDomainComplexWildcard(t *testing.T) {
 
 func TestDomainWildcard(t *testing.T) {
 	domainSet := []string{
-		"*.baidu.com",
-		"www.baidu.com",
+		"*.*.*.baidu.com",
+		"www.baidu.*",
 		"*.*.qq.com",
 		"test.*.baidu.com",
 	}
diff --git a/component/trie/sskv.go b/component/trie/sskv.go
index 268f6c18..6a661a85 100644
--- a/component/trie/sskv.go
+++ b/component/trie/sskv.go
@@ -77,7 +77,6 @@ func (ss *DomainSet) Has(key string) bool {
 	if ss == nil {
 		return false
 	}
-	key = strings.TrimSpace(key)
 	key = utils.Reverse(key)
 	key = strings.ToLower(key)
 	// no more labels in this node
@@ -86,15 +85,16 @@ func (ss *DomainSet) Has(key string) bool {
 	nodeId, bmIdx := 0, 0
 	type wildcardCursor struct {
 		bmIdx, index int
-		find         bool
 	}
-	cursor := wildcardCursor{}
+	stack := make([]wildcardCursor, 0)
 	for i := 0; i < len(key); i++ {
 	RESTART:
 		c := key[i]
 		for ; ; bmIdx++ {
 			if getBit(ss.labelBitmap, bmIdx) != 0 {
-				if cursor.find {
+				if len(stack) > 0 {
+					cursor := stack[len(stack)-1]
+					stack = stack[0 : len(stack)-1]
 					// back wildcard and find next node
 					nextNodeId := countZeros(ss.labelBitmap, ss.ranks, cursor.bmIdx+1)
 					nextBmIdx := selectIthOne(ss.labelBitmap, ss.ranks, ss.selects, nextNodeId-1) + 1
@@ -102,14 +102,17 @@ func (ss *DomainSet) Has(key string) bool {
 					for ; j < len(key) && key[j] != domainStepByte; j++ {
 					}
 					if j == len(key) {
-						return getBit(ss.leaves, nextNodeId) != 0
+						if getBit(ss.leaves, nextNodeId) != 0 {
+							return true
+						}else {
+							goto RESTART
+						}
 					}
 					for ; ; nextBmIdx++ {
 						if ss.labels[nextBmIdx-nextNodeId] == domainStepByte {
 							bmIdx = nextBmIdx
 							nodeId = nextNodeId
 							i = j
-							cursor.find = false
 							goto RESTART
 						}
 					}
@@ -120,13 +123,11 @@ func (ss *DomainSet) Has(key string) bool {
 			if ss.labels[bmIdx-nodeId] == complexWildcardByte {
 				return true
 			} else if ss.labels[bmIdx-nodeId] == wildcardByte {
-				cursor.find = true
+				cursor := wildcardCursor{}
 				cursor.bmIdx = bmIdx
 				cursor.index = i
+				stack = append(stack, cursor)
 			} else if ss.labels[bmIdx-nodeId] == c {
-				if ss.labels[bmIdx-nodeId] == domainStepByte {
-					cursor.find = false
-				}
 				break
 			}
 		}