Prunes do not have the effect of eliminating persistent feces. Reasonable diet and bowel habits in daily life can promote the elimination of persistent feces. Clinically, there is no such concept as persistent feces, usually, persistent feces refers to the fecal matter that accumulates at the end of the colon after overnight digestion. As a food, prunes do not have the ability to promote the elimination of persistent feces. However, in daily life, increasing water intake, eating a light diet, and practicing morning bowel movements can be beneficial to the elimination of persistent feces. In the process of defecation, the emergence of defecation difficulties, stool dryness and other symptoms, should also be alert to the possibility of constipation, can be under the guidance of the doctor to take lactulose and other laxative treatment. If the stool repeated abnormalities, need to seek medical treatment as soon as possible, by the doctor to be standardized disposal.