Diarrhea 22 days after delivery may be due to physiological factors, pathological factors such as gastroenteritis and other reasons. 1. Physiological factors: due to the need to promote the recovery of pregnant women and lactation, the intake of more high-sugar, high-fat food, resulting in gastrointestinal burden, can not be absorbed, the formation of diarrhea and diarrhea phenomenon, normal eating may be able to recover. 2. Pathological factors: Due to the consumption of unclean as well as cold and raw food, the mother’s immunity drops after delivery, acute gastroenteritis occurs, and diarrhea will occur. It is recommended that women pay attention to abdominal warmth, hydration, if gastrointestinal problems, to avoid stimulating, greasy food, if necessary, go to the hospital to identify the cause of the disease and then symptomatic treatment.