The invention relates to ice and snow sports event protection equipment, in particular to an anti-collision device applied to the periphery of an ice and snow sports building competition field. The anti-collision device is used for solving the problem that athletes are prone to being secondarily injured on an existing anti-collision device for the periphery of the ice and snow sports field. The anti-collision device comprises a buffer protection layer, a sliding frame, a fixed frame and two tensioning mechanisms, both the sliding frame and the fixed frame are rectangular frames, the buffer protection layer is arranged on the front end face of the sliding frame, the rear end of the sliding frame is mounted in the fixed frame in an inserted mode, a plurality of slide rails are arranged at the lower end of the sliding frame and arranged in the length direction of the sliding frame in an evenly distributed mode, each slide rail is arranged in the width direction of the sliding frame, the slide rails are fixedly connected with the fixed frame, a plurality of slide blocks are arranged at the lower end of the sliding frame, each slide block is slidably connected with the corresponding slide rail, the two tensioning mechanisms are arranged on the two sides of the fixed frame correspondingly, and the rear end of the fixed frame and the rear end of the sliding frame are tensioned by thetensioning mechanisms. The anti-collision device is used for ice and snow sports event protection.