Back pain when you bend over is mainly caused by lumbar muscle strain, inflammation of the fascia of the lumbar back and disorders of the small joints of the lumbar spine, and is common after prolonged heavy physical labor, sedentary or excessive exercise. This condition is relatively easy to deal with, generally sufficient bed rest, with local massage, massage, cupping, moxibustion, hot compress treatment, lumbago symptoms can be significantly relieved. If the pain is severe, you can also take oral non-steroidal anti-inflammatory analgesics, or central analgesics. There is also a case of lumbar pain caused by nerve compression due to lumbar disc herniation, which is more intense and often combined with radiating pain to one lower extremity, which often requires outpatient orthopedic examination and treatment at the hospital and, if necessary, surgery.