The invention belongs to the technical field of toothbrushes, and particularly relates to a novel electric toothbrush. The novel electric toothbrush comprises an outer shell and a toothbrush head, theouter shell is internally provided with a battery, a motor and a swinging device, the toothbrush head is connected onto the swinging device, the swinging device comprises a rocker arm I, a limiting piece and a rocker arm II and/or a gear, the gear comprises a power gear and driven gears, the power gear is connected with a rotating shaft of the motor, teeth of the power gear are respectively meshed with the two driven gears on the two sides, the two driven gears are respectively connected with the rocker arm I and the rocker arm II, the rocker arm I is a small rocker arm and is in clearance connection with a connecting hole of the limiting piece, an oval guide hole is formed in the limiting piece and is movably connected with the rocker arm II, the rocker arm II is a large rocker arm, theend part of the guide hole of the limiting piece is detachably connected with the toothbrush head through the connecting rod, and the toothbrush head is connected with the outer shell through a connecting piece. The mechanical movement type electric toothbrush simulating the manual tooth brushing is designed, the problem of the use habit is solved, and the novel electric toothbrush has the advantages of good cleaning effect and protecting gingiva.