Dampness and bad breath are relatively common symptoms in daily life and can have a negative impact on one’s life and social life. According to the basic theory of Chinese medicine, this condition is mostly caused by dampness and heat in the middle jiao, so the main treatment is to take oral herbs to clear heat and dry dampness. The clinical treatment and regulation can be carried out orally by taking Ganlu Disinfectant Dan, San Ren Tang, Huo Xiang Qing Stomach Capsule, Qing Zhong Tang, etc., which have very good therapeutic effects. However, it is better to see a doctor in person during the clinical specific treatment and choose the appropriate medicine for treatment under the guidance of the doctor. In addition, it is better to go to the stomatology department of the hospital for examination to exclude oral odor caused by periodontitis, gingivitis and other dental diseases. Bad breath can also occur from gastritis and gastric ulcer caused by H. pylori infection, so clinical treatment is recommended to clarify the diagnosis and then targeted treatment.