The invention discloses high-temperature diffusion equipment. The high-temperature diffusion equipment comprises an equipment main body, a high-temperature heating pipe, a heating wire, a suction pump, a quartz gas inlet hole, a silicon sheet storage groove, a quartz gas outlet hole and a gas outlet hole; heat insulation layers are arranged at the outer part of the high-temperature heating pipe; the high-temperature heating pipe is mounted at the outer part of the heating wire; the lower side of the suction pump is connected with an electric appliance control box; a heat dissipation fan is arranged at the left side of a heat dissipation hole; the equipment main body is mounted above the heat dissipation fan; the left side of a crystal boat is connected with a crystal boat fixing frame; the crystal boat is mounted at the outer part of the silicon sheet storage groove. The heat dissipation hole and the heat dissipation fan are arranged at the bottom of the high-temperature diffusion equipment; the heating wire needs to be heated to a very high temperature, so that an electric appliance correspondingly generates a lot of heat; the heat dissipation hole and the heat dissipation fan can be used for discharging the heat generated by the electric appliance in time so that the service life of the equipment is prolonged; the heat insulation layers are arranged at four sides in the equipment main body so that the heat in the equipment is prevented from losing to a certain extent and energy sources are saved.