Portable electric heating water cup

The utility model provides a portable electric heating water cup, including cup lid, machine body, heating inner cup, heating piece and power supply piece, the cup lid includes cup upper lid, exhaust pipe, cup inner lid and button assembly, cup upper lid is equipped with cup upper lid groove, vent hole and card slot, button assembly includes push rod, close cover, button and magnet; the machine body comprises a machine body upper cover and a machine body induction structure, the machine body upper cover comprises a machine body upper cover groove, and the cup cover and the machine body are provided with mutually-matched component structures such as the exhaust pipe, the cup inner cover, the key assembly and the machine body induction structure, so that the cup cover does not need to be moved away during water boiling; opening, sealing and position signal transmission of the exhaust hole can be achieved at the same time by sliding the key assembly up and down, and the problems in the prior art are effectively