The exact pathogenesis of body odor is not clear, and it is mostly considered to be related to genetics, weather, exercise, diet and other factors. Usually axillary secretions, which are also parietal gland secretions, are not odorless per se, but some bacteria colonize the surface of the armpits, and the risk of suffering from halitosis is relatively high for patients with a family history of the disease. If the weather is hot, strenuous exercise, etc., leading to more sweating, it will interact with the odorless secretion to produce unsaturated fatty acids and ammonia, which will aggravate the odor after bacterial decomposition. At the same time, adolescent women and people who often eat greasy and stimulating food can also induce or aggravate the fox odor. Patients usually need to pay more attention to personal hygiene, after sweating need to dry in time, keep the local dry, and ensure that a light diet, no smoking and alcohol, try to avoid eating spicy and stimulating food. It is recommended that the existence of bad breath patients, clear causes in a timely manner, under the guidance of the doctor to take standardized treatment.