The utility model relates to a replaceable head toothbrush, which comprises a body, and the system comprises aA handle and a receiving part which can be held by the hand are provided with a bearing groove and a brush head. The shape of the brush head is almost the same as that of the bearing groove, so that the brush head can be slidably arranged in the bearing groove. One end of the brush head is provided with a brush hair, and the bottom of the brush head is provided with a sliding part. The brush head is slidably fixed in the bearing groove, which is convenient for replacement and does not affect the brushing user.一種可替換頭部之牙刷，其係包含有，一本體，該本體係包含有一可供手部握持之柄部及一承接部，該承接部上係設有一承槽，一刷頭，該刷頭形狀係概與該承槽相當，使該刷頭可以滑設於該承槽內，該刷頭一端係設有刷毛，該刷頭底部設有一滑動部，該刷頭係可滑設固定於該承槽內，替換方便，而且不影響刷牙使用者。
