Slight night sweats (abnormal sweating after going to sleep and stopping sweating after waking up) have an effect on the body, and generally speaking, in Chinese medicine, the symptoms of night sweats are due to the lack of yin qi in the human body, which is also known as yin deficiency. The body’s qi is divided into yin qi and yang qi two kinds, in general terms, yin qi has a nourishing, cool, moist, calming effect, and yang qi has to promote, stimulate, warming effect. Under normal circumstances, at night, yang qi to enter the yin qi, by the yin qi in the external dominated the whole body, in the night people need to enter a state of rest. When the yin qi is in a relatively small number of situations, the yang qi is relatively more, yin does not contain yang, so there will be the so-called virtual fire, virtual fire forced fluid out, it will produce night sweats. If there are symptoms of night sweating, it is recommended to go to the regular hospital for examination and timely treatment.