The emergence of Zoned Namespaces SSDs, known as ZNS SSDs, has introduced new challenges and opportunities for key-value stores. Since LSM-tree has been widely adopted in key-value stores, such as RocksDB and HBase. Compared with traditional SSDs, ZNS SSDs have the advantages of lower over-provisioning costs, higher and more stable performance, and better space efficiency. However, ZNS SSDs also have some limitations like sequential writes on zones. To make ZNS SSDs efficient in LSM-tree-based key-value stores, it is necessary to revisit the LSM-tree to make it adapt to ZNS SSDs. In this paper, we first analyze the challenges of adapting LSM-tree to ZNS SSDs. Then, we propose a high-level architecture for a ZNS-SSD-aware LSM-tree-based key-value store.