A portable electric toothbrush is disclosed, which includes: a body having a switch a brushing head having a plurality of bristles and connected to one end of the body a holding component connected to another end of the body a charging circuit configured in the body a charging battery coupled to the charging circuit a control circuit coupled to the battery and the battery and the switch a motor coupled to the control circuit and an USB interface coupled to the charging circuit, whereby providing electricity to the charging battery, thereby achieving the purpose of charging.本創作係揭露一種攜帶式電動牙刷,其包含:一本體;具有一開關,一個可更換的牙刷接頭,一個開關,一個燈號指示功能,一個牙刷馬達,一個控制電路,一個usb連接頭,一個充電電路,以讓消費著達到方便充電之功能。