There are two types of constipation, one is called “functional constipation”, which is constipation caused by a weakened role of the large intestine or rectum, or a constant urge to hold back the stool. In addition, there are also cases of constipation caused by congenital abnormalities in the shape of the large intestine. Among these two types of constipation, the majority of people suffer from functional constipation; and functional constipation is divided into “transient constipation” and “habitual constipation”. Temporary constipation caused by travel, change of living environment such as moving, or mental stress or worry is called “transient constipation”; due to a reduction in food intake, the stomach or colon’s defecation reflex is not sufficient, which is also a cause. Constipation caused by a continuous decrease in the excretory action of the large intestine is called “habitual constipation”, which is called chronic constipation; it can also be divided into “delayed constipation” and “spastic constipation It can also be divided into “sluggish constipation” and “spastic constipation”. People with prolapsed internal organs or weak constitution are prone to “sluggish constipation”, while “spasmodic constipation” is constipation caused by emotional or mood changes and mental stress, and is a more common type of constipation among people who live in urban areas or are engaged in mental work. People may be surprised to learn that a person’s mental state is related to constipation, but since the movement of the colon is controlled by the autonomic nerves, it is influenced by the brain. Unlike normal constipation, this type of constipation is not painful because of defecation, there is no bloating, and the poop that comes out is hard, just like rabbit poop. In addition, constipation and diarrhea are often repeated every day, which is also a characteristic of “crampy constipation”.