The following are common causes of lumbar pain and swelling in men: First, lumbar muscle strain: young patients are prone to lumbar muscle strain, mainly related to excessive exercise. Patients will have lumbar soreness and swelling, and sometimes pain and restricted movement of the lumbar spine. After rest and exercise, the strength of the lumbar muscles can be enhanced and the soreness and swelling of the lumbar area can be reduced. Usually, attention to the protection of the lumbar muscles can prevent the occurrence of symptoms. Second, lumbar disc herniation: most elderly patients have lumbar disc herniation, involving the peripheral nerves can cause lumbar soreness and swelling, and accompanied by lumbar spine activity restrictions, sometimes involving one lower limb or bilateral lower limbs cause leg pain, and even walking difficulties. Specific lesions of the lumbar spine can be detected through CT scans or MRI examinations. Early diagnosis and early treatment can lead to rapid improvement of clinical symptoms, and excessive weight-bearing on the lumbar spine should be avoided in general to prevent the occurrence of symptoms.