Sudden pain in the middle of the back consider the following three causes: 1. Patients with coronary heart disease and angina pectoris will suddenly experience pain in the back when angina pectoris strikes, so ask the patient to rest in place, preferably in bed, and give oxygen therapy when available, as well as sublingual nitroglycerin, avoid the patient’s emotional tension, and go to the nearest hospital. 2. Patients with intercostal neuralgia are considered, mainly related to frequent It is mainly related to frequent exertion or maintaining a posture. The patient should pay attention to rest, avoid overexertion, and at the same time with physiotherapy, acupuncture or massage treatment can be given, if necessary, local medication. 3, consider patients with cardiovascular neuropathy will also appear back pain, and at the same time the pain in the precordial area, each time the pain is longer, the subjective symptoms are more obvious, the main is to give psychotherapy is the main, when necessary If necessary, anti-anxiety or antidepressant medication is given.