A lot of sweat in the chest at night may be some physiological phenomenon, may also be the symptomatic manifestation of certain diseases, such as hyperthyroidism, tuberculosis, etc., should be timely consultation, identify the cause of the disease, standardized treatment. 1, physiological factors: due to high bedroom temperature, high humidity, quilt cover is too thick, etc., there can be night sweating chest phenomenon, which is the human body to the outside world temperature, humidity rise an adaptive response, is a normal phenomenon. Generally by changing the environment can be improved, such as adjusting the appropriate temperature and humidity, appropriate reduction of clothing, blowing fans and so on. 2、Pathological factors: (1) hyperthyroidism: thyrotoxicosis caused by excessive production of thyroid hormone by the thyroid gland itself, patients often have excessive sweating, intolerance to heat and other manifestations of hypermetabolic syndrome, which can occur at night in the chest, but also accompanied by fatigue, weight loss, irritability and insomnia, and other manifestations. Common treatments include the use of antithyroid drugs, radioactive iodine and surgery. (2) Tuberculosis: Tuberculosis is a chronic infectious disease caused by Mycobacterium tuberculosis. Patients may experience symptoms such as night sweats and fever in the evening, which may be accompanied by fatigue, loss of appetite, and lethargy, and in severe cases, symptoms such as high fever, cough, and chest pain may also occur. Tuberculosis caused by night sweats in the chest, need to use anti-tuberculosis drug treatment, for those who meet the surgical indications, can be surgical removal of tuberculosis foci. The night chest sweat a lot, exclude physiological factors, should be timely consultation, clear diagnosis, by the doctor for targeted treatment.