diff --git a/problems/0738.单调递增的数字.md b/problems/0738.单调递增的数字.md
index 6b7381f3..b452d02d 100644
--- a/problems/0738.单调递增的数字.md
+++ b/problems/0738.单调递增的数字.md
@@ -278,5 +278,26 @@ object Solution {
 }
 ```
 
+### Rust
+
+```Rust
+impl Solution {
+    pub fn monotone_increasing_digits(n: i32) -> i32 {
+        let mut str_num = n.to_string().chars().map(|x| x.to_digit(10).unwrap() as i32).collect::<Vec<i32>>();
+        let mut flag = str_num.len();
+        for i in (1..str_num.len()).rev() {
+            if str_num[i - 1] > str_num[i] {
+                flag = i;
+                str_num[i - 1] -= 1;
+            }
+        }
+        for i in flag..str_num.len() {
+            str_num[i] = 9;
+        }
+        str_num.iter().fold(0, |acc, x| acc * 10 + x)
+    }
+}
+```
+
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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>