diff --git a/solution/0100-0199/0191.Number of 1 Bits/README.md b/solution/0100-0199/0191.Number of 1 Bits/README.md
index c03082bedcaca..b9ecf8276e64f 100644
--- a/solution/0100-0199/0191.Number of 1 Bits/README.md	
+++ b/solution/0100-0199/0191.Number of 1 Bits/README.md	
@@ -261,6 +261,18 @@ int hammingWeight(uint32_t n) {
 }
 ```
 
+### **Typescript**
+```ts
+function hammingWeight(n: number): number {
+    let ans: number = 0;
+    while (n !== 0) {
+        ans++;
+        n &= (n - 1);
+    }
+    return ans;
+}
+```
+
 ### **...**
 
 ```
diff --git a/solution/0100-0199/0191.Number of 1 Bits/README_EN.md b/solution/0100-0199/0191.Number of 1 Bits/README_EN.md
index ba6eaa3c8bad9..19bb1e37206c0 100644
--- a/solution/0100-0199/0191.Number of 1 Bits/README_EN.md	
+++ b/solution/0100-0199/0191.Number of 1 Bits/README_EN.md	
@@ -211,6 +211,19 @@ int hammingWeight(uint32_t n) {
 }
 ```
 
+### **Typescript**
+```ts
+function hammingWeight(n: number): number {
+    let ans: number = 0;
+    while (n !== 0) {
+        ans++;
+        n &= (n - 1);
+    }
+    return ans;
+}
+```
+
+
 ### **...**
 
 ```
diff --git a/solution/0100-0199/0191.Number of 1 Bits/solution.ts b/solution/0100-0199/0191.Number of 1 Bits/solution.ts
new file mode 100644
index 0000000000000..c7573b60e56bd
--- /dev/null
+++ b/solution/0100-0199/0191.Number of 1 Bits/solution.ts	
@@ -0,0 +1,8 @@
+function hammingWeight(n: number): number {
+    let ans: number = 0;
+    while (n !== 0) {
+        ans++;
+        n &= (n - 1);
+    }
+    return ans;
+}
\ No newline at end of file