Difficult stool like squeezing toothpaste is related to constipation and having intestinal tumor, and if necessary, colonoscopy can be performed. Constipation is caused by poor diet and bad living habits. The bowel movement of constipated patients is slow, so the discharge of stool will be difficult. When tumor disease exists in the intestinal system, it will also affect the bowel movement. When the stool passes through the tumor site, it will be obstructed by the relative narrowing of the intestinal cavity, and these patients will not only have difficulty in passing stool, but also have pus and blood, and many of them will have stool in the form of flat ribbons, and these patients should undergo colonoscopy to confirm the disease in time.