diff --git a/problems/0724.寻找数组的中心索引.md b/problems/0724.寻找数组的中心索引.md
index 14dcd2c0..0052e5d4 100644
--- a/problems/0724.寻找数组的中心索引.md
+++ b/problems/0724.寻找数组的中心索引.md
@@ -140,6 +140,24 @@ var pivotIndex = function(nums) {
 };
 ```
 
+### TypeScript
+
+```typescript
+function pivotIndex(nums: number[]): number {
+    const length: number = nums.length;
+    const sum: number = nums.reduce((a, b) => a + b);
+    let leftSum: number = 0;
+    for (let i = 0; i < length; i++) {
+        const rightSum: number = sum - leftSum - nums[i];
+        if (leftSum === rightSum) return i;
+        leftSum += nums[i];
+    }
+    return -1;
+};
+```
+
+
+
 
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 <div align="center"><img src=https://code-thinking.cdn.bcebos.com/pics/01二维码一.jpg width=500> </img></div>