Constipation requires a visit to a gastroenterologist. There are many causes of constipation: first, the most common is gastrointestinal dysfunction, which causes slow-transmission constipation, resulting in poor stool, spasm of gastrointestinal function, and edema of the intestinal mucosa. Clinically, it is most often related to one’s diet, such as eating fried and greasy food, frequent stress, emotions, fatigue, insomnia, etc., resulting in dysfunction of the vegetative nerves, which is the most common. Second, there are other diseases that lead to this result. For example, endocrinology diseases cause constipation, and neurology diseases cause constipation, which are caused by other triggers. Related tests should be done to further rule out possible conditions. For other common diseases, it is also necessary to improve the colonoscopy to further diagnose.