Children’s leg pain is also a very common phenomenon in children, children’s leg pain commonly have the following causes: 1, the existence of growing bone pain, generally seen in children aged 5-7 years old, often occurring at night, the pain is more obvious, then you can take some oral calcium and vitamin D preparations, some children may be improved; of course, you can also go to the hospital, the child’s blood test to clarify the trace elements, but also pay attention to more outdoor activities, more sunshine to promote the absorption of calcium in the body. 2, causes of bone pain and common femoral head dysplasia or hip dislocation, which can also lead to pain in the legs, because if this joint is poorly aligned, the body force line will be incorrect, which leads to joint pain, then you can take a hip X-ray to clarify the diagnosis; 3, local arthritis or some systemic immune diseases, in addition to 3, localized arthritis or some systemic immune diseases, in addition to pain, will also be accompanied by redness, swelling and heat of the joints, or fever and rash of the whole body. At this time, we must not take it lightly, and we must go to the hospital in time to do relevant examinations, such as checking the blood sedimentation anti-O (anti-streptococcal hemolysin O) to clarify the diagnosis.