diff --git "a/problems/0070.\347\210\254\346\245\274\346\242\257.md" "b/problems/0070.\347\210\254\346\245\274\346\242\257.md"
index 316fbd4f39..ddb8795920 100755
--- "a/problems/0070.\347\210\254\346\245\274\346\242\257.md"
+++ "b/problems/0070.\347\210\254\346\245\274\346\242\257.md"
@@ -220,16 +220,17 @@ public:
 ### Java
 
 ```java
-// 常规方式
-public int climbStairs(int n) {
-    int[] dp = new int[n + 1];
-    dp[0] = 1;
-    dp[1] = 1;
-    for (int i = 2; i <= n; i++) {
-        dp[i] = dp[i - 1] + dp[i - 2];
-    }
-    return dp[n];
-}
+//常规方式，从n=1开始定义
+        if (n == 1 || n == 2) {
+            return n;
+        }
+        int[] dp = new int[n + 1];
+        dp[1] = 1;
+        dp[2] = 2;
+        for (int i = 3; i <= n; i++) {
+            dp[i] = dp[i - 2] + dp[i - 1];
+        }
+        return dp[n];
 ```
 
 ```Java