diff --git a/StudentNotFoundException.java b/StudentNotFoundException.java
new file mode 100644
index 0000000..ecfd075
--- /dev/null
+++ b/StudentNotFoundException.java
@@ -0,0 +1,23 @@
+package com.studentmanagement.exception;
+
+/**
+ * 学生未找到异常，当尝试操作不存在的学生时抛出
+ */
+public class StudentNotFoundException extends Exception {
+    
+    /**
+     * 构造函数
+     * @param message 异常信息
+     */
+    public StudentNotFoundException(String message) {
+        super(message);
+    }
+    
+    /**
+     * 构造函数，带学生ID
+     * @param id 学生ID
+     */
+    public StudentNotFoundException(int id) {
+        super("学生ID " + id + " 未找到");
+    }
+}
\ No newline at end of file