The stirrup is one of the most important components in the harness, and it has played an irreplaceable role in reducing the difficulty of controlling the horse and promoting the development of the cavalry, which was even considered one of the most important inventions in nomadic culture. Inner Mongolia borders the Outer Mongolia in the north and the Central Plains in the south, and it has been an area where northern nomadic people have frequent exchanges with Han people since ancient times. When investigating the evolution and rheology of the stirrup shape, Inner Mongolia is also the most ideal reference location to further explore the internal and external factors that affect the rheology of the stirrup shape.