The product solves the problem of lost or misplaced door keys by using an electronic key such as a fingerprint or a password. At the same time, it is a push-pull form, using a mechanical self-elastic lock body, which can be automatically locked when the door is closed, making it more convenient for everyone to use. This product can support mobile phone and bracelet unlocking, and also supports intelligent linkage between multiple devices, while supporting OTA upgrade, so it is a truly smart door lock. The appearance is also simple and generous, giving people a beautiful and practical intuitive feeling.