The invention discloses a bearing design method and a bearing structure for preventing slippage, relating to the technical field of bearings. According to the method, the outer surface of a bearing outer ring (1) is set to be of a square structure, the mounting surface of a bearing base matched with the outer surface of the bearing outer ring (1) is set to be of a square structure, the inner surface of a bearing inner ring (2) is set to be of a square structure, and a shaft mounting surface matched with the inner surface of the bearing inner ring (2) is set to be of a square structure. By adopting the bearing design method and the bearing structure, the problems of slippage, creepage and the like between the bearing inner ring 2 as well as the bearing outer ring 1 and a matching surface under a heavy load are solved; the bearing inner ring 2 and the bearing outer ring 1 are in clearance fit with the bearing matching surface, so that the problem of breakage of a bearing ring in a big-interference state is solved effectively, and relevant rotating and positioning accuracies are not influenced. Meanwhile, the problem of difficulty in assembling and disassembling of the bearing is solved effectively, and the production cost is low.