The invention relates to a wheel type electric soldering iron auxiliary soldering wire feeding device. A common electric soldering iron and a wire feeding function are integrated, soldering work can be operated by one hand, and soldering precision and efficiency are improved. A rotatable fixing clamp is connected with the common electric soldering iron, and a wire feeding wheel train is used for achieving feeding compensation for soldering wires in the soldering process. According to the wire feeding wheel train, a main push wheel is meshed with straight teeth on edges of upper wheels located on the left and right of the main push wheel, and an adjusting screw can be used for adjusting pressing force between lower wheels and the corresponding upper wheels, so that tangential force and friction force which can drive soldering wires between the upper wheels and the lower wheels are generated. Soldering wire guiding pipes are arranged at the two ends of the auxiliary soldering wire feeding device, and the outwards-extending length of the front guiding pipe is adjustable to be suitable for soldering wires and electric soldering irons of different specifications.