The invention relates to a self-adaption supporting mechanism of a movable platform, and relates to the technical field of movable platform parking supporting. Four universal spherical hinge supportsare adopted to support the movable platform so that adaption to an uneven ground face can be achieved. Two of the four spherical hinge supports are directly mounted on a platform car frame, and the other two spherical hinge supports are mounted on the platform car frame after being connected with each other through a symmetrical four-rod mechanism. The four-rod mechanism achieves that the four spherical hinge supports land simultaneously to bear force in a balanced mode. The supporting mechanism can be self adaptive to a ground face within a certain flatness range to support the movable platform, the rigidity and the stability of supporting are good, and the supporting mechanism is convenient to use and maintain.