The invention discloses a device with an elastic buckle mounted on a connecting pipe and equipment. The device comprises a feeding mechanism, a guide seat, an ejector pin and an extruding seat. The guide seat is provided with a horizontal feeding channel, and a feeding port is formed in the side face of the feeding channel. The ejector pin is arranged in the feeding channel and used for pushing the elastic buckle, a clearance is arranged between the ejector pin and the bottom face of the feeding channel, and a gap matched with the elastic buckle is formed in the side, exactly facing the feeding port, of the ejector pin. A conical hole connected with the feeding end of the feeding channel is formed in the extruding seat. The elastic buckle is conveyed through the feeding mechanism, so that the elastic buckle moves along the feeding channel on the guide seat to reach the gap matched with the elastic buckle. The ejector pin pushes the elastic buckle, the elastic buckle is extruded in the conical hole of the extruding seat and then pushed into a connecting pipe. The device is easy and convenient to operate, labor intensity is reduced, and mounting efficiency is improved.