Causes of pain on both sides of the lower back after exercise include over-exercise, lumbar muscle strain, and lumbar muscle spasm. Treatment includes general treatment, physical therapy, drug therapy and so on. 1. Excessive exercise: If you don’t exercise for a long time, sudden exercise or excessive exercise will cause lumbar pain due to repeated stretching of local muscles. Generally, the symptoms will be slowly relieved after stopping exercise and no treatment is needed. 2. Lumbar muscle strain: soft tissue injury or sprain in the lumbar region due to too much exercise or too long a period of time. Symptoms can be improved through acupuncture, massage, magnetic therapy, infrared and other physical therapy. Severe pain can be treated with topical diclofenac diethylamide latex, together with oral celecoxib and other medications. If necessary, local injection of lidocaine can be used. 3. Lumbar muscle spasm: it may be caused by electrolyte loss and muscle fatigue during exercise. It is mainly relieved by stretching and relaxation, massage, massage and other methods. In addition to the above reasons, it may also be caused by the recurrence of the underlying disease (e.g. lumbar disc herniation) and so on. If the above symptoms are severe, or if the symptoms persist and do not improve, you should go to the hospital for treatment. All of the above medications should be used under doctor’s supervision, avoid self-medication.