It is possible to have constipation and diarrhea alternately because the patient has enteritis, which means that the internal structure of the intestine has been disturbed or that intestinal motility is disturbed. Patients may have diarrhea, such as frequent stools, yellow stools and watery stools, etc. The number of diarrhea may be greater than 5-6 times a day. When the patient is treated for a period of time, or after a period of dietary modification, the stool may gradually normalize, or constipation may occur, such as no bowel movement for 3-4 days, or no bowel movement for 1 week, which is mainly caused by the impact of intestinal function. It is also likely to be seen in irritable bowel syndrome, because it may cause the patient to have constipation and diarrhea, etc. It is necessary to promptly go to the hospital for examination.