An electric heating rotary kiln comprises a rotary pipe, a heat-insulating part, a belt pulley, bearing wheels, a heating system, a head feeder, a tail discharger and other parts, and is characterized in that: the part of the inner wall of the rotary pipe or the heat-insulating part, which is in contact with material, is insulating material; the heating system at least comprises two electrodes or two groups of electrodes, one electrode or one group of electrodes are the anode, the other electrode or the other group of electrodes are the cathode, alternating-current or direct-current voltage is applied on the two electrodes or two groups of electrodes, the electrodes run through the rotary pipe to get into the rotary kiln and touch heated material, current gets to the material and then the cathode via the anode, so that the material heats as a resistor, and thereby the material is heated. Compared with other electric heating rotary kilns, the electric heating rotary kiln has the advantages that: the electric heating rotary kiln can be produced into an internal electric heating rotary kiln, the material can be uniformly heated for the material heats, the electric heating efficiency is high, energy consumption is low, and the heating and insulating measure is simple and convenient.