Generally speaking, Liu Wei Di Huang Wan is not used to treat bad breath. Liuwei Di Huang Wan is mainly composed of zedoary, yam, poria, mudanpi, ripened dihuang, cornelian cherry and other traditional Chinese medicines, with the effect of nourishing yin and tonifying the kidney, clinically can be used for the treatment of dizziness and tinnitus caused by yin deficiency in the kidney, tidal fever of the bones (a burst of heat, feeling that the heat is coming from the inside of the bones to the outside), lumbar and knee soreness and weakness, night sweating (sweating abnormally after going to sleep, but waking up sweating stops), and so on. It can be seen that Liuwei Di Huang Wan does not have the effect of treating bad breath. The adverse reactions and contraindications of Liuwei Di Huang Wan are not clear. During the period of taking the drug, it is necessary to pay attention to avoid eating spicy food, should not take cold and flu medicine at the same time, and those who are allergic to the ingredients of this drug are forbidden to take it. Six-flavored dihuang pill should be used under the guidance of a traditional Chinese medicine practitioner, and should not be taken blindly. Patients with severe halitosis should seek medical diagnosis and treatment in time to avoid delaying the condition.