Night sweats is the name of a Chinese medical condition, which is characterized by abnormal sweating after going to sleep, and then stopping after waking up. Some patients have night sweats as soon as they fall asleep, some have night sweats until midnight, and some have night sweats just after closing their eyes for a while. The amount of sweating that occurs varies greatly. Although there are physiological reasons for night sweats, but more pathological factors, if the occasional night sweats once, it is not too big a problem, is afraid to continue to appear, then it is necessary to pay attention to. Night sweating is a Chinese medical evidence, according to Chinese medicine typology, can be divided into two categories: one is Yin deficiency fire, mainly manifested as night sweating, five heartburn, or with afternoon hot flashes, two cheek color red, thirst, red tongue less moss; the other is the two deficiencies of Qi and Yin, mainly night sweating, but also often accompanied by spontaneous sweating, or with low fever, dry mouth. This is the type from traditional Chinese medicine, if considered from Western medicine, then the diseases that cause night sweats are: 1, hyperthyroidism, hyperthyroidism will cause hyperthyroidism, secretion of excessive thyroxine, increased metabolic rate, it will be manifested as increased neural excitability, sympathetic nerve overexcitation can appear fear of heat, sweating, during this period also prone to night sweats of hyperthyroid patients. 2, diabetes, high blood sugar will cause plant nerve dysfunction, sympathetic excitation, and increased sweat secretion; at the same time, the increased metabolic rate of blood sugar is also one of the causes of excessive sweating in diabetic patients. 3, tuberculosis, night sweating is one of the moderate symptoms of tuberculosis, is due to the toxins of tuberculosis bacteria and its metabolites stimulate the central nervous system, resulting in autonomic nervous system dysfunction. 4, tumor, night sweating is a clinical symptom of most tumors. 5, hypertension, menopausal syndrome, hypoglycemia, systemic lupus erythematosus, endocarditis and other diseases as well as postoperative physical weakness, mental tension and psychological stress may cause night sweats. The diseases that cause night sweats are not only the above, but also some unknown lesions that we have to discover, and of course we cannot exclude some physiological factors, as well as the influence of environmental factors. All in all, if it is occasionally night sweats once, there is no need to be too nervous, if it is frequent, then you need to pay attention to it and find the cause of the work needs to be done.