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A kind of sugarcanegathering carriages of selfpropelled sugarcane transporters with scissor lifting mechanisms was designed aiming at geographic and geomorphic characteristics of hilly areas and existing problems of traditional sugarcane transporters with long wheel distances, high lifting gravity center and poor overall stability. Stabilities of traditional and scissor sugarcanegathering carriages were analyzed and studied from angles of their mass centers and discharging angles through the EDEM software based on the discrete element method. The virtual simulation analysis and experiment results showed that the lateral deviation value of the mass center of traditional sugarcanegathering carriages was 123556mm, their mass center oscillating quantity was 177008mm, the maximum change of centroid relative height was 158927mm and their discharging angle was 10493°. Both the lateral deviation value and oscillating quantity of the mass center of scissor sugarcanegathering carriageswas 70549mm, the maximum change of centroid relative height was 161982mm and their discharging angle was 2983°. Compared with traditional sugarcanegathering carriages, scissor sugarcanegathering carriages had a lateral mass center deviation value decreased by 429%, a mass center oscillating quantity decreased by 601% and a discharging angle decreased by 716%. The center of mass of the two cars was changed almost the same as the height. On the other hand, relative contact parameters needed in discrete element simulation were studied, the obtained results were validated through combination of simulation analysis tests and verification experiments in the test platform, which indicated that the theoretical results matched well with experimental ones. In other words, the sugarcanegathering carriages had a good stability. The research results provided references on stability simulation development and innovative design of sugarcanegathering carriages.