The utility model provides a beam -pumping unit horse head pin quick assembly disassembly device, sells a section of thick bamboo and is greater than horse head pin external diameter by the internal diameter including a round pin section of thick bamboo, welt, support, jack, bottom plate, a top section of thick bamboo and horse head pin, highly is the half the drum steel pipe of horse head pin height and constitutes, the welt is the circular steel sheet that the diameter is greater than a round pin section of thick bamboo to concentric with a round pin section of thick bamboo, the two adopts welded connection, and welt along support vertical motion, support are 120 by three root circle steel to arrange, there is the wedge groove that passes the centre of a circle on the plane on the jack ejector pin for connect a top section of thick bamboo, the jack bottom is connected with bottom plate bolt. The utility model has the characteristics of compact structure, reasonable in design adopts the jack to be the power supply in operation process, has reduced the requirement to operating space and operating personnel technique quality, has reduced the high altitude and has used safe risk and the intensity of labour that the sledgehammer brought.