In case of diarrhea during menstruation: 1. you can take drugs to regulate the intestinal flora, such as Intestinal, Bifidobacterium, Bifidobacterium, etc. 2. you can take astringent drugs to stop diarrhea, such as montelukast, etc. The above drugs have no significant effect on breastfeeding. 3. if gastroenteritis occurs, you can take haloperidol orally for treatment, but haloperidol should be suspended during the period of use. 4.If there is obvious dehydration, oral rehydration salts can be taken to correct electrolyte disorders and dehydration. 5.If there is serious diarrhea, stool routine and other related tests are needed to clarify the cause of diarrhea.