Chinese medicine believes that bad breath is mostly related to actual heat. Spleen-Yang deficiency is mainly characterized by symptoms of coldness, which usually does not lead to chronic bad breath. Spleen yang deficiency is a disease of traditional Chinese medicine. Patients with spleen yang deficiency are mainly characterized by symptoms of coldness, which can be seen clinically as coldness, thirst, abdominal pain, warmth and pressure, loose stools (thin and unshaped stools), dysuria (unruly urine), and swelling of the limbs, etc. The formation of halitosis is believed to be associated with solid heat. The formation of bad breath in traditional Chinese medicine is believed to be mostly related to real heat, such as stomach fire (stomach fire and heat evil exuberance), lungs and stomach heat and gastrointestinal food and drink stagnation, depression and heat (the evil too long to stay in the evil will be transformed into heat), etc., in addition to bad breath, but also often accompanied by a dry mouth, gums, constipation, urination (urine volume is small, dark yellow color) and other symptoms. Long-term halitosis patients are recommended to go to a regular hospital, under the guidance of professional physicians to identify the treatment.