Stool straining and not clean may be related to constipation, intestinal tumors, sinusitis and other reasons. 1. Constipation: Due to the slow intestinal peristalsis of constipated patients, the water is absorbed by the intestines, which makes the stools dry and may cause the feeling of straining to pull out the stools and not being able to pull them out cleanly. 2. Intestinal tumors: If you have intestinal tumors, when the size is large, it can hinder the normal discharge of stools, and you may have the feeling that it is hard to pull the stools cleanly. 3. Sinusitis: due to the stimulation effect of inflammation, it can lead to congestion and edema of mucous membrane tissue, which can hinder the normal discharge of stool. There are a lot of other factors that make it difficult to pull a bowel movement, so it is recommended that those who have difficulty pulling a bowel movement should go to the hospital in time to get a clear picture of the cause of the problem, and standardize the treatment under the guidance of the doctor in order to avoid delaying the condition.