Thigh pain in children may be caused by excessive daytime exercise, trauma, growing pains and other factors. 1. Excessive daytime exercise: generally due to the imperfect development of children’s body functions, excessive play during the day, then there will be children’s thigh pain. 2. Trauma: it may be caused by the child’s trauma after exercise, which is mainly manifested in local wound marks, ecchymosis and other symptoms, so the child will have thigh pain. 3. Growing pains: usually caused by the rapid development of bones in all parts of the child’s body, resulting in rapid growth, so the child will have thigh pain symptoms. It is also recommended to pay more attention to the usual, try to avoid excessive exercise, and timely supplementation of nutrition and calcium and other trace elements for the patient, such as milk, eggs, lean meat and so on. Children’s thigh pain may also have other reasons, it is recommended to go to the hospital in time to improve the examination to clarify the cause of the disease, to give targeted treatment or treatment.