The utility model is an electric mosquito flap, and it includes have a making body, a switch, a charging port and a USB power source line. The making body system includes a handle and a frame, the hollow drive circuit board being electrically connected with one battery modules of accommodating and one with the battery modules of the handle system. The switch is worn on the what handle, and is soldered to the drive circuit board. System is equipped with plural power grid in the frame, which is electrically connected to the drive circuit board. The charging port system wears the what handle, and is soldered to the drive circuit board. One end system of the USB power source line is optionally inserted into the charging port, one USB plug of other end system. When the electric power deficiency in the battery modules, the USB power source line can be penetrated, directly looks for USB socket charging, and empty commercial power socket need not be found.本新型係一電蚊拍,其包含有一拍體、一開關、一充電埠及一USB電源線。該拍體係包含有一拍柄及一拍框,該拍柄係中空以容置一電池模組及一與該電池模組電連接的驅動電路板。該開關穿設於該拍柄上,並銲接至該驅動電路板。該拍框內係設有複數電網,該複數電網係電連接至該驅動電路板。該充電埠係穿設於該拍柄,並銲接至該驅動電路板。該USB電源線之一端係可選擇地插入該充電埠,另一端係一USB插頭。當該電池模組中的電力不足時,便可透過該USB電源線,直接找尋USB插座充電,而無須尋找空的市電插座。