In the big cycle of physical activities, teachers and children should play with the development of equipment to make physical activities fun. For example, in the drilling and crawling practice of large-class children, the teacher planned two passages for children, so that children could play the role of special forces, respectively, through the grass and crawling under the obstacle net, then cross the river, replace grenades with yogurt bottles, and create a mine-clearing area. Children quickly dodged through this area, and finally grabbed the red flag by jumping and other areas. The whole physical activity is carried out in situations and games, and the children are full of enthusiasm and strong interest, which not only improves the ability of drilling, climbing and jumping, but also exercises a strong will.