Vehicle-mounted heating cup

The utility model discloses a vehicle-mounted heating cup, and relates to the field of vehicle-mounted supplies. The vehicle-mounted heating cup comprises a cover, an outer shell, an inner container and a plug base. A control panel is further arranged on the surface of the outer shell, and the control panel is provided with a heating button, an insulating button and a refrigerating button. The plug base is connected with a vehicle-mounted cigar lighter plug through a wire. The lower end of the inner container is connected with a heating tube, and a thermoelectric cooler is arranged at one end of the heating tube. A PCB assembly is arranged at the bottom of the outer shell, a fastening ring is arranged at the upper end of the outer shell, and the heating tube and the side face of the thermoelectric cooler are connected with heat insulation and heat dissipation layers. The heating tube and the thermoelectric cooler are additionally arranged, the insulating button, the heating button and the refrigerating button