Pain on both sides of the waist in men is commonly caused by the following: first, lumbar muscle strain: lumbar muscle strain is the most common cause of lumbar pain in men, mainly related to heavy physical labor, excessive exercise, and maintaining a long-term fixed posture. Patients will have clinical symptoms such as soreness and swelling on both sides of the lumbar spine, accompanied by lumbar stiffness and limited lumbar forward flexion activities. Through massage, acupuncture and physiotherapy, the clinical symptoms can be relieved quickly. Second, lumbar disc herniation: lumbar disc herniation will be manifested as lumbar spine pain symptoms, accompanied by reflex spasm and stiffness of the lumbar muscles, and lumbar spine activities will be affected. Severe cases can also involve the buttocks and lower limbs, causing lower limb claudication or muscle atrophy. Therefore, if men experience pain on both sides of the lumbar region, they must be diagnosed and treated early in order to obtain satisfactory relief of clinical symptoms and avoid serious adverse consequences.