diff --git a/CodingInterview.md b/CodingInterview.md
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+++ b/CodingInterview.md
@@ -39,5 +39,6 @@
 | 34 | [二叉树中和为某一值的路径](https://www.nowcoder.com/practice/b736e784e3e34731af99065031301bca?tpId=13&tqId=11177&tPage=2&rp=1&ru=%2Fta%2Fcoding-interviews&qru=%2Fta%2Fcoding-interviews%2Fquestion-ranking) | [113. Path Sum II](solutions/113.%20Path%20Sum%20II.md)|
 | 35 | [复杂链表的复制](https://www.nowcoder.com/practice/f836b2c43afc4b35ad6adc41ec941dba?tpId=13&tqId=11178&tPage=2&rp=1&ru=%2Fta%2Fcoding-interviews&qru=%2Fta%2Fcoding-interviews%2Fquestion-ranking) | [138. Copy List with Random Pointer](solutions/138.%20Copy%20List%20with%20Random%20Pointer.md)|
 | 36 | [二叉搜索树与双向链表](https://www.nowcoder.com/practice/947f6eb80d944a84850b0538bf0ec3a5?tpId=13&tqId=11179&tPage=2&rp=1&ru=%2Fta%2Fcoding-interviews&qru=%2Fta%2Fcoding-interviews%2Fquestion-ranking) | 426. Convert Binary Search Tree to Sorted Doubly Linked List | 有锁 |
+| 37 | [序列化二叉树](https://www.nowcoder.com/practice/cf7e25aa97c04cc1a68c8f040e71fb84?tpId=13&tqId=11214&tPage=1&rp=1&ru=/ta/coding-interviews&qru=/ta/coding-interviews/question-ranking) | [297. Serialize and Deserialize Binary Tree](solutions/297.%20Serialize%20and%20Deserialize%20Binary%20Tree.md)|