The common causes of right leg pain are leg muscle injury and lumbar disc herniation, as follows: First, leg muscle injury: leg muscle injury mainly occurs in the process of strenuous exercise, especially confrontational sports, such as basketball, soccer, patients can occur in the right leg muscle acute injury, will be manifested as severe pain symptoms in the right leg, accompanied by weight-bearing difficulties and limited activities of the leg, there will also be local swelling. After cold compresses, rest, braking, pain symptoms will gradually disappear. Second, lumbar disc herniation: lumbar disc herniation compressing the nerve root on the right side can cause radiated pain in the right leg, usually the pain will be located at the back of the thigh and the back of the calf, and patients who have not seen relief for a long time will have muscle atrophy in the right leg, accompanied by numbness in the right leg, and most patients also have lumbar spine pain and limited lumbar spine activities. The location of the lesion can be detected by MRI, and early bed rest and lumbar traction, together with medication such as celecoxib, can bring relief to the symptoms.