Children’s leg pain and knee pain may be related to growing pains, bumps, calcium deficiency and other factors, and can be relieved by giving hot compresses and massages, reducing exercise and medication supplements. 1. Growing pains: some children may have growing pains due to greater activity and faster growth of long bones, which are not coordinated with the growth and development of local muscles and tendons. At this time, you can use local hot compresses or massages to relieve tension and discomfort caused by pain. 2. Knock: Children are young and playful by nature, they may bump in the process of jumping and jumping, and then there will be obvious pain, you need to reduce the amount of exercise, so that the muscles can be relaxed, and if there is obvious trauma, you need to give iodine povidone disinfection treatment to prevent infection. 3. Calcium deficiency: children in the body of calcium deficiency, will also appear in the phenomenon of leg pain knee pain, after diagnosis can follow the doctor’s instructions to supplement calcium lactate, calcium carbonate, etc., so as to improve the local pain symptoms. If the symptoms of children’s leg pain and knee pain are not relieved, or accompanied by other symptoms, they should go to the hospital in time, and give targeted treatment after clarifying the cause.