Stiffness of the lumbar plate after exertion is commonly caused by myofasciitis of the lumbar back, lumbar intervertebral disc herniation, lumbar spinal stenosis and other diseases, and the treatment methods include manipulation, medication, physical therapy, surgery and so on. 1. Lumbar back myofasciitis: mainly caused by long-term exertion. It can be treated by manipulation such as massage to loosen the stiff muscle tissues, thus relieving the symptoms, and at the same time, topical medication such as diclofenac diethylamide emulsion can be used to cooperate with the treatment. 2. Lumbar disc herniation: for mild cases, rest in a hard bed, supplemented by physical therapy (such as acupuncture, massage, etc.), and at the same time with medication, such as diclofenac sodium, indomethacin and so on. Surgical treatment can be considered for patients who are not effective in non-surgical treatment, with severe symptoms and obvious symptoms of neurological damage. 3. Lumbar spinal stenosis: for patients with atypical symptoms, bed rest, massage, traction and medication (e.g. diclofenac sodium, etc.) should be used. Surgery should be considered for those who are ineffective in the above treatments. There may be other causes of lumbar stiffness after exertion, such as lumbar soft tissue sprain, etc. It is recommended to go to the hospital in time to clarify the cause and then give targeted treatment. The above drugs should be used under the guidance of doctors and pharmacists, avoid self-medication.