diff --git a/slice/contains.go b/slice/contains.go
index 085e8a9..63288f2 100644
--- a/slice/contains.go
+++ b/slice/contains.go
@@ -35,3 +35,14 @@ func ContainsString(sl []string, v string) bool {
 	}
 	return false
 }
+
+
+func ContainsSlice(smallSlice, bigSlice []string) bool {
+	for i := 0; i < len(smallSlice); i++ {
+		if !ContainsString(smallSlice[i], bigSlice) {
+			return false
+		}
+	}
+
+	return true
+}
diff --git a/slice/unique.go b/slice/unique.go
index 28a5d33..444ba07 100644
--- a/slice/unique.go
+++ b/slice/unique.go
@@ -1,5 +1,7 @@
 package slice
 
+import "strings"
+
 func UniqueInt64(s []int64) []int64 {
 	size := len(s)
 	if size == 0 {
@@ -68,3 +70,30 @@ func UniqueString(s []string) []string {
 
 	return ret
 }
+
+func UniqueTrimString(s []string) []string {
+	size := len(s)
+	if size == 0 {
+		return []string{}
+	}
+
+	m := make(map[string]struct{})
+	for i := 0; i < size; i++ {
+		item := strings.TrimSpace(s[i])
+		if item == "" {
+			continue
+		}
+		m[item] = struct{}{}
+	}
+
+	realLen := len(m)
+	ret := make([]string, realLen)
+
+	idx := 0
+	for key := range m {
+		ret[idx] = key
+		idx++
+	}
+
+	return ret
+}