The causes of long standing calf pain include varicose veins of the lower limbs, pyriform muscle syndrome, lumbar spinal stenosis, etc. Depending on the cause, you can choose to wear compression stockings, massage, use of ibuprofen and other medications, surgery and other treatments. 1. Varicose veins of the lower limbs: After standing for a long time, the blood in the veins of the lower limbs is difficult to flow back to the heart, and then it accumulates in the veins of the lower limbs, which may be manifested as dilatation of the superficial veins of the lower limbs, as well as the symptoms of aching, swelling and pain of the lower limbs, fatigue, tiredness and so on. Avoid standing for a long time and wear medical compression stockings or use elastic bandage, and surgery is needed for serious cases. 2. Piriformis syndrome: Piriformis syndrome is characterized by radiating pain in the buttocks, thighs, calves and feet, difficulty in walking, and soreness in the calves when standing for a long time. It can be treated conservatively by massage, heat application and local closure. If conservative treatment is ineffective, surgery is needed. 3. Lumbar spinal stenosis: Lumbar spinal stenosis can cause nerve compression, resulting in lumbar pain, lower limb pain, aggravated by standing or walking. Symptoms can be relieved by bed rest. If symptoms are not relieved, physical therapy such as heat therapy and phototherapy or oral non-steroidal anti-inflammatory drugs such as ibuprofen and indomethacin can be used. In severe cases, surgery is needed. All of the above medications should be used under the guidance of a doctor, avoid self-medication. If the above symptoms are not relieved, or accompanied by other symptoms, it is recommended to go to the hospital for early treatment.