The invention discloses a cage supporting and stabilizing device based on dead points of two four-bar mechanisms. The cage supporting and stabilizing device based on the dead points of the two four-bar mechanisms comprises a machine frame (1), a supporting four-bar mechanism (14), a stabilizing four-bar mechanism (15) and a rocker arm rear platform (13). According to the cage supporting and stabilizing device based on the dead points of the two four-bar mechanisms, by means of the dead point characteristic of the four-bar mechanisms, a cage can be supported smoothly and safely and stabilized firmly, the situation that the cage moves up and down due to the elasticity of suspension steel wire ropes is effectively avoided, the cage can be loaded and unloaded more stably and more reliably, the safety performance of equipment is effectively improved, the structure is simple and reliable, operation is flexible, a large power source is omitted, and the effect is obvious.