Children’s leg pain, consider may be growth pain caused by the growth and development stage, or knee joint injury and other factors. 1. Growing pains: As children are in the rapid growth and development stage, the growth rate of bone is faster than the growth rate of the surrounding joint capsule and ligaments, resulting in a mismatch between the growth rate of soft tissues and bone tissues, causing growing pains in the knee joint. It can be relieved by massage. 2. Knee injury: due to the children’s active, over-exercise caused by knee injury, thus causing pain. Patients pay attention to try to avoid excessive exercise, so as not to aggravate the discomfort of the legs. Children’s leg pain, there may be other reasons, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, give targeted treatment or treatment.