Electric toothbrush with rotary brush head

The utility model provides an electric toothbrush with a rotary brush head, which comprises an electric toothbrush main body, a motor is arranged in the electric toothbrush main body, a toothbrush head component is detachably mounted at the upper end of the electric toothbrush main body, the toothbrush head component comprises a brush handle, and the toothbrush head component further comprises a transmission shaft which is arranged in the brush handle. One end of the transmission shaft is in transmission connection with the output end of the motor; one end of the central shaft is in transmission connection with the other end of the transmission shaft; the brush head is arranged outside the central shaft in a sleeving manner, and the brush head and the central shaft synchronously rotate; and the brush head protection cover is sleeved outside the brush head and is fixedly connected with the brush handle. The toothbrush head and the toothbrush handle are arranged along the same axis, the toothbrush head rotates