Night sweats are mainly due to deficiency of qi or yin. In the case of qi deficiency, it is mainly due to the weakening of vasodilatation function that causes night sweats. If there is a deficiency of heart yin, qi and yin, night sweating can also occur, accompanied by palpitations, hypersomnia and other clinical symptoms. If Yin deficiency is accompanied by dryness and heat, it is considered to be caused by Kidney Yin deficiency. If it is accompanied by heartburn and hot flashes, it is considered to be yin deficiency and fire exuberance. After a clear diagnosis is made through the above mentioned types of evidence, it can be treated by drugs that nourish yin, replenish qi, nourish the heart as well as nourish yin and reduce fire, for example, if it is caused by qi deficiency, it can be adjusted by tonifying the middle and benefiting the heart with qi broth; if it is caused by deficiency of heart qi and deficiency of qi and yin, it can be treated by Gui Spleen broth; if it is caused by kidney yin deficiency, it can be treated by Six-flavored Digoxigenin Pill; and if it is caused by yin deficiency and fire, it can be adjusted by Zhi Bo Dihuang Pill to regulate.