diff --git a/codes/c/chapter_sorting/insertion_sort.c b/codes/c/chapter_sorting/insertion_sort.c
new file mode 100644
index 000000000..ae1f6e7de
--- /dev/null
+++ b/codes/c/chapter_sorting/insertion_sort.c
@@ -0,0 +1,41 @@
+/*
+ * File: insertion_sort.c
+ * Created Time: 2022-12-29
+ * Author: Listening (https://github.com/L-Super)
+ */
+
+#include "../include/include.h"
+
+/* 插入排序 */
+void insertionSort(int nums[], int size)
+{
+    // 外循环：base = nums[1], nums[2], ..., nums[n-1]
+    for (int i = 1; i < size; i++)
+    {
+        int base = nums[i], j = i - 1;
+        // 内循环：将 base 插入到左边的正确位置
+        while (j >= 0 && nums[j] > base)
+        {
+            // 1. 将 nums[j] 向右移动一位
+            nums[j + 1] = nums[j]; 
+            j--;
+        }
+        // 2. 将 base 赋值到正确位置
+        nums[j + 1] = base; 
+    }
+}
+
+/* Driver Code */
+int main()
+{
+    int nums[] = {4, 1, 3, 1, 5, 2};
+    insertionSort(nums, 6);
+    printf("插入排序完成后 nums = \n");
+    for (int i = 0; i < 6; i++)
+    {
+        printf("%d ", nums[i]);
+    }
+    printf("\n");
+
+    return 0;
+}
diff --git a/docs/chapter_sorting/insertion_sort.md b/docs/chapter_sorting/insertion_sort.md
index 1614b5c35..faaf38358 100644
--- a/docs/chapter_sorting/insertion_sort.md
+++ b/docs/chapter_sorting/insertion_sort.md
@@ -135,7 +135,24 @@ comments: true
 === "C"
 
     ```c title="insertion_sort.c"
-
+    /* 插入排序 */
+    void insertionSort(int nums[], int size)
+    {
+        // 外循环：base = nums[1], nums[2], ..., nums[n-1]
+        for (int i = 1; i < size; i++)
+        {
+            int base = nums[i], j = i - 1;
+            // 内循环：将 base 插入到左边的正确位置
+            while (j >= 0 && nums[j] > base)
+            {
+                // 1. 将 nums[j] 向右移动一位
+                nums[j + 1] = nums[j]; 
+                j--;
+            }
+            // 2. 将 base 赋值到正确位置
+            nums[j + 1] = base; 
+        }
+    }
     ```
 
 === "C#"