Abstract: An electric toothbrush head includes a brush body and an insertion block. An upper part of the brush body is provided with bristles and a lower part of the brush body is provided with an insertion chamber. The insertion block is inserted into the insertion chamber and defines an insertion channel for inserting of a movement therein, wherein an outer wall of the movement abuts an inner wall of the insertion channel. A connecting section above the insertion channel is provided on an upper part of the insertion block. An adhesive section is provided on an upper part of the connecting section for fixing an outer wall of the adhesive section to an inner wall of the insertion chamber. A clamping section is provided on a lower part of the connecting section for fixing an outer wall of the clamping section to the inner wall of the insertion chamber.