Reflection is one of the most effective ways to acquire knowledge and improve logical thinking ability. Timely reflection can make teaching more effective with less effort. Case teaching mode can not only improve students' interest in learning, but also grasp the methods of first aid on the spot according to team cooperation. In addition, it can help students grasp the key and difficulties of first aid in the flexible application of sports injury knowledge, and can cultivate students' logical thinking ability and innovation ability. Extracurricular expansion exercises can not only sublimate the depth of students' thoughts and knowledge, but also play a certain role in cultivating students' logical thinking and innovation ability.