This application relates to the field of electric
toothbrush technology, and more particularly to a compatible electric
toothbrush. When the
toothbrush handle is fitted with a first toothbrush head, after the
drive shaft is inserted into the slot, the locking part engages into the slot to prevent the first toothbrush head from detaching from the toothbrush
handle. After the
drive shaft is inserted into the
insertion slot, the locking protrusion engages into the slot to prevent the second toothbrush head from detaching from the toothbrush
handle. The first and second toothbrush heads are adapted to different operating
modes. This allows the electric toothbrush to be compatible with different toothbrush heads. When users need to use different cleaning
modes, they can simply replace the corresponding toothbrush head to meet their cleaning needs, reducing living costs and improving the user experience.