This invention provides an electric toothbrush brush with multi-brushing traces, which includes a handle unit, a linking unit, and a driving unit. The linking unit includes a brush stem inserted into the handle unit in a removable manner and a brush head formed at one end of the brush stem. The brush stem has an interlocking groove. The driving unit comprises a driving member arranged in the handle unit, a transmission member arranged inside the driving member in a rotatable manner and a connection member mounted to the driving member and connected with the transmission member. The transmission has a protrusive rib inserted in the interlocking groove. The driving member drives the transmission member to rotate, and the protrusive rib and the interlocking groove are fit with each other so that the protrusive rib drives the brush stem to reciprocally oscillate so as to make the brush head perform the brushing action.一種多軌跡刷動之電動牙刷,包含一握把單元、一連動單元,及一驅動單元。該握把單元包括一扣合蓋,該連動單元包括一可缷除地插置於該握把單元的刷柄,及一設置於該刷柄一端的刷頭,該刷柄具有一卡槽。該驅動單元包括一設置於該握把單元內的驅動件、一可轉動地設置於該握把單元內的傳動件,及一設置於該驅動件且連動該傳動件的連接件,該傳動件具有一插設於該卡槽的凸肋,該連接件具有一心軸及一齒輪。其中,該驅動件驅動該傳動件而進行轉動,由該凸肋與該卡槽的相配合,使該凸肋連動該刷柄進行往復擺動,進而使該刷頭進行刷動之動作。2‧‧‧握把單元21‧‧‧殼座211‧‧‧容置槽212‧‧‧安裝槽213‧‧‧限位槽22‧‧‧扣合蓋23‧‧‧抵壓桿3‧‧‧連動單元31‧‧‧刷柄311‧‧‧連接段312‧‧‧限位段313‧‧‧卡槽32‧‧‧刷頭4‧‧‧驅動單元41‧‧‧驅動件42‧‧‧傳動件421‧‧‧凸肋43‧‧‧連接件431‧‧‧心軸432‧‧‧齒輪433‧‧‧油封5‧‧‧開關單元
