The utility model discloses an electric heating device, this electric heating device includes: the tray, the setting is in a plurality of resistance wires of tray upper surface, the resistance wire surface has insulation protective layer, run through a plurality of ventilation holes of tray, the setting is in the blast apparatus of tray lower surface, blast apparatus with a plurality of ventilation holes set up relatively, the setting is in power supply circuit in the tray, power supply circuit with the resistance wire is connected, is used for control the on -state of resistance wire and power, wherein, work as the power with when the resistance wire does not switch on, blast apparatus is out of work, the resistance wire is in the nature state of upholding, when the resistance wire with when the power switches on, resistance silky hair heat altered is red, just blast apparatus work is blown the resistance wire makes the resistance wire is in the first state of upholding. Audio -visual this electric heating device's of observation of electric heating device convenient to use person user state, convenient to use need not to install the pilot lamp, and is with low costs.