From the elementary school level, physical education should be taught with vivid teaching resources for students to be inculcated, and the value of diversified curriculum education must be given full play to focus on the overall literacy development of elementary school students. In this regard, this paper proposes the application of functional task training to elementary school physical education, setting up corresponding functional task training according to actual teaching objectives. Functional task training can help students improve their ability to acquire, analyze and summarize information, help them expand their knowledge and learn multidisciplinary content through training, and achieve the goals of elementary school physical education. This paper analyzes the benefits of the functional task training fun module and the functional task training cooperative module for elementary physical education teaching by examining the feasibility of adding fun instruction such as multi-scene instruction and additional group confrontation training from the perspective of focusing on fun and cooperation in elementary physical education teaching. This paper argues that the support and cooperation of functional task training can fully lead students to learn to imitate and communicate their interests.