The invention discloses a feeding device. The feeding device comprises a machine base, multiple supporting plates arranged side by side and linked, a pulling rod, an inserting pin, a sliding block anda driving part connected with the pulling rod; the supporting plates, the pulling rod, and the sliding block are in sliding connection with the machine base, each supporting plate is provided with alimiting hole, the pulling rod comprises a slope part, one of the sliding block and the pulling rod is provided with a strip sliding hole, and the other of the sliding block and the pulling rod comprises a stop pin inserted into the sliding hole, the inserting pin is arranged on the sliding block in a sliding manner, one end of the inserting pin is in abut joint with the slope part and can slide relative to the slope part, the other end of the inserting pin extends towards a limiting hole, under driving of the driving part, the pulling rod moves in a reciprocating manner, the pulling rod drives the inserting pin to be inserted into or separated from the limiting hole through the slope part, the pulling rod can drive the sliding block to intermittently move through the stop pin, the slidingblock drives the inserting pin to be selectively aligned with one supporting plate. According to the technical scheme, the feeding device is low in cost, and feeding is achieved at an equal step.