Back pain, which is much better when lying down, can be caused by different reasons, common causes include lumbar muscle strain, lumbar dorsal fasciitis, cervical spondylosis and so on, and the treatment also adopts different methods, including general treatment, medication, physiotherapy and so on. 1. Lumbar muscle strain: take bed rest, strengthen the back exercise appropriately; choose local hot compresses, physiotherapy, etc.; oral non-steroidal drugs such as celecoxib, etc.. 2. Lumbar dorsal fasciitis: pay attention to warmth, prevent cold; can be localized physiotherapy, massage, heat therapy, microwave, etc.; oral non-steroidal drugs such as ibuprofen. 3. Cervical spondylosis: pay attention to not lowering the head for a long time and looking at the cell phone in daily life; local physical therapy, heat treatment, massage, etc. can relieve the pain; oral non-steroidal drugs such as diclofenac sodium, etc.. There may be other reasons for back pain, and it is recommended to consult a doctor for standardized treatment under the guidance of a doctor if the symptoms continue to be unrelieved. The above medications should be taken under the guidance of a doctor.