Soreness in the back can be caused by the following common reasons: 1) injury and strain to local tissues, such as trauma, strenuous exercise, and prolonged high workload, can lead to injury and strain to the muscles, fascia, and ligaments of the back, resulting in soreness. 2) Pleurisy, pleural effusion, mainly pleurisy due to inflammatory stimulation, can cause soreness in the back. 3, can be seen in the back of the swelling, such as soft tissue swelling or bone swelling, can lead to symptoms of soreness. 4, certain visceral system diseases, can also lead to the sudden appearance of soreness in the back of the symptoms, such as myocardial ischemia, will appear on the left side of the shoulder, back pain symptoms. Patients are advised to go to the hospital for consultation and detailed examination to clarify the diagnosis and take appropriate treatment.