Back pain is a common clinical symptom. There are many causes of back pain, such as strain, trauma, inflammation, degenerative changes in the cervicothoracic spine, visceral diseases (e.g., cholecystitis, lung disease, coronary heart disease, etc.), and diseases such as thoracic spine tumors and tuberculosis can cause it. The most common causes of back pain are back myofasciitis, a common clinical condition that is a sterile inflammatory disease caused by exertion and local cold. If back pain occurs, pay attention to rest, avoid bending and weight-bearing, pay attention to warmth, avoid getting cold, local heat physiotherapy can be applied, and oral non-steroidal anti-inflammatory drugs, such as diclofenac sodium extended-release tablets, can be taken for pain. If the symptoms are not significantly relieved after the above treatment, it is necessary to go to the hospital in time to improve the relevant examination for clear diagnosis and treatment, so as not to delay the disease.