The invention relates to the field of welding equipment, and specifically relates to a wire feeding device. The wire feeding device comprises a rack, wherein a rack groove is formed in the rack; a cover plate is arranged on the rack groove; a wire feeding wheel is arranged in the rack groove; the wire feeding wheel is arranged on an output shaft of a motor; a compression mechanism is arranged at one side of the rack groove; the compression mechanism comprises a compression wheel frame, a compression wheel, an adjustment micrometer head and a press block; the adjustment micrometer head is connected with a lug on the compression wheel frame; the compression wheel frame is arranged in a groove in a bottom of the press block and capable of sliding in the length direction of the press block; the compression wheel is arranged on the compression wheel frame; the compression wheel corresponds to the wire feeding wheel; a welding wire is clamped between the wire feeding wheel and the compression wheel; and a wire charge device and a wire discharge device are further arranged on an upper sidewall and a lower sidewall of the rack groove. The invention provides a wire feeding device which is high in wire feeding stability, production efficiency and applicability.