The two sides of the leg pain, the common causes are mainly the following situations: First, the patient after strenuous exercise, did not carry out the relaxation of the leg muscles, will cause a large number of lactic acid accumulation in the lower limbs and cause both sides of the leg pain. Patients can take a warm bath, lower limb muscle relaxation, hot omelette external compresses and other methods to promote the local lactic acid faster metabolism, alleviate the pain symptoms on both sides of the leg; Second, the patient suffered a serious car accident injuries, which will cause the double lower limb fracture, severe pain on both sides of the leg, accompanied by obvious deformity of the activities. At this time, the patient needs to improve the X-ray or CT examination as soon as possible to clarify the severity of the fracture. Surgical internal fixation should be performed as soon as possible to restore the continuity of the leg bones, and postoperative treatment should be strengthened with anti-infective, anti-edema and hemostatic supportive therapy to promote the faster relief of pain in both lower limbs.