The so-called night sweats usually refers to sweating after falling asleep at night, and sweating stops after waking up, for the following reasons: 1. From the perspective of Chinese medicine: Yin deficiency and fire leads to external depletion of qi, blood and fluid, resulting in night sweats, caused by kidney yin deficiency and lung yin deficiency; 2. From the perspective of Western medicine: 1. Due to the relatively high sympathetic excitability at night, causing the sweat glands to secrete sweat to strengthen, resulting in sweating after sleep at night, i.e. night sweats. 2. Mental stress, overly stressed, tired This type of person is prone to night sweats. 3, malnutrition, lack of vitamins, trace elements, especially calcium deficiency, causing higher nerve excitability at night and sweating after sleep. 4, endocrine diseases, such as hyperthyroidism, diabetes and other patients appear night sweats. 5, infectious diseases, especially tuberculosis, osteomyelitis and other infectious diseases, can cause night sweats.