The anal opening always feels blocked by stool, there are two possibilities: First, the stool is not clean, the residual stool in the anal opening will have this feeling. Second, the stool is emptied but there is still a feeling of incomplete defecation, which is then called outlet obstructive constipation. Because the mucous membrane of the lower rectum is relaxed, the mucous membrane of the lower rectum is blocked at the anal opening when the stool is removed, thus causing a feeling of incomplete defecation. If it is caused by the first condition, you need to take oral laxative drugs for treatment. For example, you can choose Maren Pills or Sophora Pills, or you can choose Lactulose Oral Liquid. At the same time, you should adjust your diet, increase the intake of dietary fiber and fruits and vegetables, and drink more water. The second condition causes a feeling of incomplete defecation, and surgery should be considered for treatment.