Some women experience nausea before their menstruation. There are various reasons for these symptoms, some of which are physiological and some of which are pathological. Because women’s physique and symptoms are different, the factors that produce nausea will vary from person to person. The following is an analysis of the specific reasons why women get nauseous before their periods: 1. Physiological reasons, before women get their periods, the hormones in their bodies will increase, and eventually endocrine disorders will occur. Due to the proximity of the uterus and gastrointestinal too many hormones will stimulate the female gastrointestinal, resulting in nausea, dry vomiting and other conditions, these are normal phenomena, do not need treatment. 2, pathological factors, some women have gastrointestinal disease, before the onset of menstruation, gastrointestinal discomfort nausea, dry vomiting, and even diarrhea and other conditions. It can be seen that some of the nausea and other conditions before women’s menstruation are normal and some are abnormal. It is recommended that women face it correctly and go to the hospital to confirm the diagnosis if necessary.