The invention provides a key for face recognition of an electric vehicle, which includes an electric vehicle instrument box cover, a sound alarm, a control switch, a protective case, a mechanical key hole, a face recognition camera structure that can supplement light, and an information processing installation fixing plate structure , a sealable backup battery box structure, a sealed protective frame structure that is easy to install, an oil lubricating conduit, a fixed card, an oil filter, an oil filling hole, a connecting belt and a leak-proof plug cap, and the sound alarm is embedded in the instrument box of the electric vehicle The upper left side of the front surface of the cover. The setting of the face recognition acquisition camera and the protective cover of the present invention is beneficial to face recognition, and the camera is protected under the effect of the protective cover; the setting of the supporting light pole and the supplementary light, It is beneficial to play the role of supplementary light when the light is dark, and meet the needs of face recognition, so that the electric vehicle can be started when the key is lost.