Fecal pellet with defecation difficulty generally refers to constipation, the causes of constipation can be divided into organic such as digestive system diseases and endocrine system diseases, and functional such as poor defecation and dietary habits of two categories, as follows: 1. Organic: (1) Diseases of the digestive system: such as colon tumor, megacolon, etc., can cause constipation due to the influence of the disease on defecation. (2) Pharmacologic factors: such as iron, opioids, anti-Parkinsonian drugs, etc., can cause constipation due to the influence of drugs on intestinal peristalsis. (3) Endocrine system diseases: such as diabetes mellitus, hypothyroidism, etc., can cause constipation due to metabolic abnormalities. 2. Functional: (1) Poor defecation habits: such as irregular defecation, defecation, lack of concentration, etc., can inhibit defecation, thus triggering constipation. (2) bad dietary habits: such as excessive dieting, intake of fiber is too small, can also cause constipation. (3) mental psychological factors: work tension, fast pace of life, etc., will affect the normal bowel habits, thus triggering constipation. It is recommended that patients go to the hospital in a timely manner, after clarifying the cause of the disease, and actively cooperate with the doctor’s treatment.