There are many reasons for afternoon or night sweats. In addition to being related to the sleeping environment, the condition of air circulation, and whether or not it is breathable in the bedroom, night sweats may occur in certain diseases such as tuberculosis, endocarditis and malignant tumors, lymphoma, and so on. In addition, endocrine disorders, diabetes mellitus, hyperthyroidism patients, as well as patients with mood disorders, autonomic disorders, can also appear a lot of night sweating. When night sweating occurs, the first thing to do is to go to the hospital for a systematic examination to rule out endocrine and infectious diseases. In terms of Chinese medicine, Chinese medicine believes that yin deficiency can easily lead to night sweating. People with kidney yin deficiency have internalized deficiency heat, and the body’s yin qi is empty, so when they sleep at night, the guardian qi takes advantage of the deficiency to fall into the yin, which produces a large amount of sweat.