The present invention relates to an electric toothbrush, A drive motor is provided inside the toothbrush body, and one end of the first rotation shaft and the second rotation shaft, each of which has the bristles installed on the connection portion of the drive motor, is coupled to the other end of the upper case. In the electric toothbrush that is driven to the driving motor by the button operation in the state coupled to the coupling hole of the cover provided in the respective brush heads rotate at the same speed by the driving force transmitted to the drive motor, An insertion part is formed in the cover, and a coupling part is formed at an end of the upper case, and the coupling part is fastened and fixed by inserting the coupling part into the insertion part of the cover, and the coupling part has a first fixing jaw having a smaller diameter toward the end； A second fixing jaw formed to face the first fixing jaw to fix the cover, and a coupling surface coupled to the inserting portion of the cover, and a protective cover is provided to protect the gum by improving the cover. It is characterized in that the cover further comprises a gum protection member installed to protect the gums. The conventional cover as described above is provided with a protective cover having a protective surface for protecting the gums and the first and second spaces for discharging foreign matters and the like, and inserting and engaging the coupling part into the insertion portion of the protective cover. Thus, when the user brushing, there is an effect of preventing the phenomenon that the cover is removed by the external pressure. In addition, the present invention improves the conventional cover, by installing a detachable gum protection member on the cover, it is effective to prevent tooth damage caused by gum damage and bristles strongly adhered to the teeth due to incorrect brushing of the user have.본 고안은 전동칫솔에 관한 것으로서, 칫솔몸체의 내부에 구동모터가 구비되고, 상기 구동모터의 연결부에 각각 칫솔모가 설치된 제1회전축과
