A glass bottle cutter based on electric heating comprises a base. A rotary bracket and a heating and cutting seat are disposed at two ends of an upper surface of the base respectively. A motor is disposed in the rotary bracket, and a rotating shaft of the motor is disposed outside the rotary bracket and is provided with a support plate. An adhesive pad allowing the bottom of a glass bottle to cling thereto is disposed on a surface of the support plate. A heating tube is disposed on an upper surface of the heating and cutting seat. The base is provided with a power access port and an internal circuit mainboard. The motor, the heating tube and the power access port are all electrically connected to the circuit mainboard.