Electric toothbrush with replaceable brush head structure

The utility model discloses an electric toothbrush with a replaceable brush head structure, which comprises a handle component and a brush head component connected with one end of the handle component, the brush head component comprises a brush head main body and a mounting groove arranged at one end of the brush head main body, a guide post is arranged in the mounting groove, a fixed head is arranged on one side of the guide post, and the handle component comprises an outer shell. A transmission rod is arranged at one end of the motor, one end of the transmission rod is connected with the brush head body in an inserted mode, a detachable brush assembly is arranged in the installation groove and comprises a base and bristles arranged on the base, an installation base is arranged below the base, and an insertion hole corresponding to the guide column is formed below the installation base. And a sleeve corresponding to the fixing head is arranged on one side of the mounting seat. The electric toothbrush solves