Early pregnancy odor is due to intestinal dysfunction, dietary inattention and other factors. Women in the early stages of pregnancy will lead to hormone secretion disorders, the gastrointestinal system will have a certain impact, many women will have a slowdown in peristalsis, food digestion, emptying is affected, in the process of digesting food will also produce a lot of gas. Due to the slow peristalsis of the intestines, the gas will be retained in the intestines for a longer period of time, and it will be particularly smelly when the gas is discharged. In the early stages of pregnancy, for the development of the fetus, women will eat nutritious food, especially high protein food, high protein food in the process of digestion will lead to an increase in gas-producing bacteria, the intestines will produce a large amount of gas, the exhaust will also be relatively smelly. During pregnancy, women with smelly exhaust can eat more fiber-rich foods, which can improve the environment of intestinal flora and reduce the symptoms of smelly exhaust.