diff --git a/problems/0509.斐波那契数.md b/problems/0509.斐波那契数.md
index 638bfdfe..d339940c 100644
--- a/problems/0509.斐波那契数.md
+++ b/problems/0509.斐波那契数.md
@@ -277,7 +277,30 @@ int fib(int n){
     return fib(n-1) + fib(n-2);
 }
 ```
+### Rust
+动态规划:
+```Rust
+pub fn fib(n: i32) -> i32 {
+    let n = n as usize;
+    let mut dp = vec![0; 31];
+    dp[1] = 1;
+    for i in 2..=n {
+        dp[i] = dp[i - 1] + dp[i - 2];
+    }
+    dp[n]
+}
+```
 
-
+递归实现：
+```Rust
+pub fn fib(n: i32) -> i32 {
+    //若n小于等于1，返回n
+    f n <= 1 {
+        return n;
+    }
+    //否则返回fib(n-1) + fib(n-2)
+    return fib(n - 1) + fib(n - 2);
+}
+```
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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>