diff --git a/component/trie/set_test.go b/component/trie/set_test.go
index 32cc7d99..6672d885 100644
--- a/component/trie/set_test.go
+++ b/component/trie/set_test.go
@@ -12,9 +12,12 @@ func TestDomain(t *testing.T) {
 		"baidu.com",
 		"google.com",
 		"www.google.com",
+		"test.a.net",
+		"test.a.oc",
 	}
 	set := trie.NewDomainSet(domainSet)
 	assert.NotNil(t, set)
+	assert.True(t, set.Has("test.a.net"))
 	assert.True(t, set.Has("google.com"))
 	assert.False(t, set.Has("www.baidu.com"))
 }
@@ -24,6 +27,8 @@ func TestDomainComplexWildcard(t *testing.T) {
 		"+.baidu.com",
 		"+.a.baidu.com",
 		"www.baidu.com",
+		"test.a.net",
+		"test.a.oc",
 		"www.qq.com",
 	}
 	set := trie.NewDomainSet(domainSet)
diff --git a/component/trie/sskv.go b/component/trie/sskv.go
index 7e86f539..61e92ce7 100644
--- a/component/trie/sskv.go
+++ b/component/trie/sskv.go
@@ -33,9 +33,8 @@ func NewDomainSet(keys []string) *DomainSet {
 	domainTrie.Foreach(func(domain string, data struct{}) {
 		reserveDomains = append(reserveDomains, utils.Reverse(domain))
 	})
-	sort.Slice(reserveDomains, func(i, j int) bool {
-		return len(reserveDomains[i]) < len(reserveDomains[j])
-	})
+	// ensure that the same prefix is continuous
+	sort.Strings(reserveDomains)
 	keys = reserveDomains
 	if len(keys) == 0 {
 		return nil
@@ -77,6 +76,7 @@ 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
@@ -123,7 +123,9 @@ func (ss *DomainSet) Has(key string) bool {
 				cursor.bmIdx = bmIdx
 				cursor.index = i
 			} else if ss.labels[bmIdx-nodeId] == c {
-				cursor.find = false
+				if ss.labels[bmIdx-nodeId] == domainStepByte {
+					cursor.find = false
+				}
 				break
 			}
 		}