Bad breath due to kidney deficiency is mainly due to insufficient kidney yin, that is, the patient’s body is not enough yin and lead to deficiency heat, there is insufficient stomach yin (insufficient yin fluid in the stomach), deficiency fire inflammation, this situation needs to eat nourishing the kidneys and nourishing the yin of the medicines, such as six flavors of rhizoma dihuang soup, Zuo Gui Pill, and so on. The treatment for patients with kidney deficiency and bad breath needs to focus on nourishing the kidney and nourishing the yin, among which the medicines include Six-flavored Di Huang Tang, Zuo Gui Pill, Da Tonic Yin Pill, and so on, and Chinese herbs such as Chinese wolfberry, Zhi Mou, chrysanthemum, cypress, golden cherry, fructus gorgonianus, oyster, lotus beard and other Chinese medicines are often used to add and subtract. Kidney deficiency halitosis patients usually also need to maintain a good mood, avoid excessive depression, depression and other bad emotions, develop good habits, avoid fatigue, stay up late, but also appropriate physical exercise, such as jogging, yoga, etc., can enhance the physical condition. Kidney deficiency with bad breath need to use drugs under the guidance of a doctor, do not use on their own to avoid adverse effects.