Abstract:Objective:The study aims to simulate different ice angles of skating, and obtain a reasonable angle of push-off through optimization analysis. Methods: A finite element model was established, then the kinematic parameters of ice hockey players were obtained by 3D photography, which were inputted as the boundary condition of the model for validation and simulation. The stress and strain was obtained for analyzing,, then construct the multi-objective optimization function model.. Results: Under the same push-off angle, the stress value of the tibia and fibula is the largest, followed the subtalar joint stress value, then the first metatarsophalangeal joint stress, and finally the plantar fascia stress value is the smallest. As the angle of push-off increases, the stress of foot and ankle decreases monotonously, the stress of tibia fibula and plantar fascia changes greatly, and the stress of subtalar joint and first metatarsophalangeal joint changes less. Conclusions: At push-off phase, the smaller push-off angle , the greater stress of the ankle. The optimal push-off angle depends on the expected value of skating speed. If the preference coefficient between speed and stress tolerance is given, the optimal push-off angle can be calculated by optimization method.