If you have a bowel movement once every 2-3 days and the stool is normal in character, without difficulty in defecation or a feeling of incomplete defecation, then the situation is normal. If you have a bowel movement once every 2~3 days and less than 3 times a week with difficulty in defecation and dry feces, then you should consider the existence of constipation. 1. Normal situation: some people have a bowel movement once every 2-3 days and the stool is normal in character, not accompanied by difficulty in defecation and a feeling of incomplete defecation, which is a normal phenomenon at this time. 2. Constipation: Constipation can be divided into functional constipation and organic constipation, the common causes are as follows: (1) Functional constipation: small amount of food, insufficient water, nervousness, colonic motility dysfunction, abdominal and pelvic muscle tension and other reasons can lead to functional constipation. (2) Organic constipation: common causes include proctitis, colon tumor, Crohn’s disease, hypothyroidism and many other diseases. If the patient has the symptoms of constipation, it is recommended that the patient go to the hospital in time and follow the doctor’s instructions for standardized treatment.