The drugs taken for chronic lumbar muscle strain include diclofenac sodium, ibuprofen and celecoxib depending on the condition. Chronic lumbar muscle strain is generally long-term heavy physical strength, posture is not normal or in a special position, resulting in repeated minor injuries gradually accumulated, mild symptoms, aggravated after exertion, alleviated after rest, treatment to correct poor posture. If the pain interferes with work and sleep, non-steroidal anti-inflammatory drugs such as diclofenac sodium and ibuprofen can be taken when it is mild to reduce the inflammatory response, so that the local muscle and soft tissue pain can be reduced. If the pain is severe, drugs such as celecoxib can be taken. Chronic lumbar muscle strain does not improve significantly after rest or aggravation, should promptly go to the regular hospital, by the doctor according to the symptoms, signs and auxiliary examination to determine the specific cause, for the cause of the correct treatment. All of the above drugs need to be taken under the guidance of a doctor.