A low chest pain may be caused by pleurisy, dislocation of the left joint of the sternum, cardiac neurosis and other reasons. 1. Pleurisy: for example, caused by bacterial or viral infection, tumor disease, etc., patients are prone to chest pain. Especially in activities or coughing, deep breathing pain will be more serious, and some will have difficulty breathing, chest tightness and so on. 2. Dislocation of the left joint of the sternum: chest pain occurs when bending over, usually due to the role of external forces. 3. Cardiac neurosis: this disease is prone to various cardiac discomforts, mostly post-sternal or anterior chest pain. If it is caused by organic lesions of the heart, it is recommended to go to regular hospitals in time to do electrocardiogram and cardiac ultrasound as well as cervical spine MRI, and the results need to be analyzed and diagnosed and treated with the help of a professional doctor. During the treatment period, you should pay attention to rest, avoid engaging in some over-taxing physical work or too strenuous sports. At the same time, we should also ensure that the diet is light, try to choose to eat small meals, avoid overeating.