The invention discloses an integration ball cage type universal joint and wheel edge and wheel shaft nesting system, and belongs to the field of car transmission technical application. The problems that at present, spline fit exists in a ball cage type universal joint at present, the large whole structure space is occupied, and the transmission efficiency is low are solved. The integration ball cage type universal joint and wheel edge and wheel shaft nesting system is particularly characterized in that a ball cage type universal joint shell is optimized and improved to be embedded in a wheel shaft of a wheel edge system, high integration of two systems is achieved, hollow cylindrical design is adopted in the ball cage type universal joint shell, inner and outer fit is sufficiently considered in the section, spline connection is removed, the more tight matching effect is achieved, the shell is embedded in a matching hole position of a wheel shaft in an interference fit manner, a threadlimiting ring and an open pin are adopted to limit the ball cage shell, the thread limiting ring is fixed to the wheel shaft, through holes are formed in the limiting ring and the wheel shaft, the open pin is inserted in the through hole; a limiting check ring limits parts in the ball cage and the ball cage shell. Wheel edge wheel shaft and ball cage type universal joint and axle shaft connectionhigh integration is achieved, and the beneficial effects of being small in occupied space, high in transmission efficiency, tight in fit, small in weight and the like are achieved.