diff --git a/1684. Count the Number of Consistent Strings b/1684. Count the Number of Consistent Strings
new file mode 100644
index 0000000..5d877ca
--- /dev/null
+++ b/1684. Count the Number of Consistent Strings	
@@ -0,0 +1,23 @@
+class Solution {
+public:
+    int countConsistentStrings(string allowed, vector<string>& words) {
+        set<char> ans;
+        for (auto it : allowed) {
+            ans.insert(it);
+        }
+        int count = 0;
+        for (int i = 0; i < words.size(); i++) {
+            bool f1 = true;
+            for (auto it : words[i]) {
+                if (ans.find(it) == ans.end()) {
+                    f1 = false;
+                    break;
+                }
+            }
+            if (f1) {
+                count++;
+            }
+        }
+        return count;
+    }
+};