The invention discloses an electric toothbrush. The electric toothbrush comprises a bracket, a supporting member, a driving device, a hall effect sensor and a brush head which is configured at one endof the bracket and assembled with the driving device, wherein the supporting member is rotatably connected with the bracket; the driving device is assembled on the bracket through the supporting member, and the driving device and the brush head form a lever structure by using a connecting position of the supporting member and the bracket as a fulcrum; the hall effect sensor and the driving deviceare oppositely arranged; a pressure sensing mechanism is arranged between the hall effect sensor and a bracket body, and comprises a metal elastic sheet; a magnet is arranged between the metal elastic sheet and the hall effect sensor, and produces magnetic fields; and the brush head enables the driving device to deflect due to different applied force, the metal elastic sheet is abutted to move relative to the sensor, and the hall effect sensor can induce different detection values through magnetic flux changes of the magnetic fields. Through the adoption of the technical scheme disclosed by the invention, overvoltage protection of the electric toothbrush can be prompted, the tooth brushing intensity of a user can be monitored through data detected by the hall effect sensor, and the user experience is increased.