Ankle joint plays a crucial role in human movements, and the joint is prone to get injured. In order to control ankle joint sports injury and increase ankle joint flexibility so that make it better serve human movements, this paper analyzes aerobics players’ ankle joint specialties so as to explore aerobics prevention and cure efficiency on ankle joint sports injury and make contributions to reduce sports injury. This paper firstly analyzes ankle joint effect, motion features, force status and injury cause in movement process, and make suppose of aerobics effects in ankle joint sports injury prevention and cure aspects that provide directions basis for experiments objectives; Then during the research, it applies experiment comparing method, mathematical statistics method and logical analysis in analyzing before and after experiment two group participants’ position sense changing parameters, force sense changing parameters and muscle strength features changing parameters .The research results show that experiment group members that took systematic aerobics training have great difference from that members without taking aerobics training in the aspect of ankle joint sports injury prevention and cure by comparing, it verifies the supposition of aerobics prevention and cure efficiency on ankle joint sports injury.