diff --git a/problems/0070.爬楼梯.md b/problems/0070.爬楼梯.md
index a06ee91e..c46e3b46 100644
--- a/problems/0070.爬楼梯.md
+++ b/problems/0070.爬楼梯.md
@@ -470,6 +470,23 @@ impl Solution {
 }
 ```
 
+dp 数组
+
+```rust
+impl Solution {
+    pub fn climb_stairs(n: i32) -> i32 {
+        let n = n as usize;
+        let mut dp = vec![0; n + 1];
+        dp[0] = 1;
+        dp[1] = 1;
+        for i in 2..=n {
+            dp[i] = dp[i - 1] + dp[i - 2];
+        }
+        dp[n]
+    }
+}
+```
+
 <p align="center">
 <a href="https://programmercarl.com/other/kstar.html" target="_blank">
   <img src="../pics/网站星球宣传海报.jpg" width="1000"/>