Leg pain after standing for a long time may be caused by lactic acid buildup, strain, lumbar disc herniation, and other factors, and treatments vary. The treatments include proper rest, physical therapy, hot compresses, lumbar traction and other conservative treatments. 1. Lactic acid buildup: caused by long-term overstressing of the leg and exercise, this condition does not need treatment, and the symptoms will be eliminated on their own after a few days of rest. 2. Strain injury: soft tissue edema of the leg caused by muscle injury, such as gastrocnemius muscle and hamstring muscle. Usually can be treated by physical therapy, hot compresses and other treatments, so that the local blood circulation to accelerate, promote the absorption of edema, and then eliminate leg pain. Please do it under the guidance of professional doctors. 3. Lumbar disc herniation: due to the compression of lumbar vertebrae on the nerves caused by leg pain, the main treatment is to loosen the compression of lumbar vertebrae on the nerves, so as to improve the symptoms of the legs. Treatment can be given to lumbar traction and other treatments, serious cases can follow the doctor’s instructions for surgical treatment, it is recommended that the treatment under the guidance of a doctor. There are many other causes of leg pain after standing for a long time, such as knee osteoarthritis, varicose veins, bone tumors, etc. It is recommended to consult a doctor in time to clarify the cause of the disease before treatment.