It is normal to have diarrhea during menstruation and is considered to be caused by menstrual diarrhea. The appearance of menstrual diarrhea is mostly seen in women with cold body and cold body accompanied by coldness in the uterus, such as low menstrual volume, dark color and shedding of lumps. In order to avoid menstrual diarrhea during menstruation, it is recommended to keep the abdomen warm and avoid getting cold in the abdomen, so as not to induce menstrual diarrhea. Especially after entering summer, it is recommended to choose long pants during menstruation, pay attention to abdominal warmth, and avoid direct blowing under electric fans or air conditioners, so as not to cause abdominal cold. When diarrhea occurs during menstruation, no special treatment is needed, only attention to abdominal warmth, digestible pasta and soups, and less coarse fiber food. Easy-to-digest foods can reduce the burden on the gastrointestinal tract and help a lot to relieve menstrual diarrhea.