3D face recognition door lock is to use 3D camera to establish millimeter level 3D face model for users, detect and track the features of human face through living detection and face recognition algorithm, compare with 3D face information stored in the door lock, complete face verification, and complete unlocking, so as to realize high-precision identity authentication and insensitive unlocking. Compared with 2D face door lock, 3D face door lock is not easily affected by posture, expression and other factors, and is not affected by light environment. At the same time, it can prevent attacks from photos, videos, headgear, etc., and its recognition performance is more stable. It can realize high-precision 3D safe face recognition. 3D face recognition door lock is currently the highest security level of intelligent door lock.