Constipation is generally divided into obstructive constipation (obstructive) and slow-transmission constipation (slow-transmission). The symptoms of obstructive constipation are soft stools, obstructive feeling, lack of patency, and a feeling of incomplete defecation. Auxiliary examination, fecal imaging. In the slow-transmission type, the main symptoms are reduced or no bowel movement, with abdominal distention and dry stools. Auxiliary test: slow transmission test. Mixed type, both of the above.