diff --git a/solution/0000-0099/0001.Two Sum/README.md b/solution/0000-0099/0001.Two Sum/README.md
index 8cb31ebef6a58..0ebec1acbca10 100644
--- a/solution/0000-0099/0001.Two Sum/README.md	
+++ b/solution/0000-0099/0001.Two Sum/README.md	
@@ -255,6 +255,25 @@ class Solution {
 }
 ```
 
+### **TypeScript**
+
+```ts
+function twoSum(nums: number[], target: number): number[] {
+    const m: Map<number, number> = new Map();
+
+    for (let i = 0; ; ++i) {
+        const x = nums[i];
+        const y = target - x;
+
+        if (m.has(y)) {
+            return [m.get(y)!, i];
+        }
+
+        m.set(x, i);
+    }
+}
+```
+
 ### **...**
 
 ```
diff --git a/solution/0000-0099/0001.Two Sum/README_EN.md b/solution/0000-0099/0001.Two Sum/README_EN.md
index c95e80adcd113..e6044cd68c879 100644
--- a/solution/0000-0099/0001.Two Sum/README_EN.md	
+++ b/solution/0000-0099/0001.Two Sum/README_EN.md	
@@ -244,6 +244,25 @@ class Solution {
 }
 ```
 
+### **TypeScript**
+
+```ts
+function twoSum(nums: number[], target: number): number[] {
+    const m: Map<number, number> = new Map();
+
+    for (let i = 0; ; ++i) {
+        const x = nums[i];
+        const y = target - x;
+
+        if (m.has(y)) {
+            return [m.get(y)!, i];
+        }
+
+        m.set(x, i);
+    }
+}
+```
+
 ### **...**
 
 ```
diff --git a/solution/0000-0099/0001.Two Sum/Solution.ts b/solution/0000-0099/0001.Two Sum/Solution.ts
new file mode 100644
index 0000000000000..624e48d251021
--- /dev/null
+++ b/solution/0000-0099/0001.Two Sum/Solution.ts	
@@ -0,0 +1,14 @@
+function twoSum(nums: number[], target: number): number[] {
+    const m: Map<number, number> = new Map();
+
+    for (let i = 0; ; ++i) {
+        const x = nums[i];
+        const y = target - x;
+
+        if (m.has(y)) {
+            return [m.get(y)!, i];
+        }
+
+        m.set(x, i);
+    }
+}