Stool not shaped many days may physiological factors such as mental stress, environmental changes, etc., may also be related to pathological factors such as acute gastroenteritis, ulcerative colitis, etc.. 1. physiological factors: due to excessive mental tension, mental stress, change of environment, etc., may lead to the emergence of unshaped stools. 2. Pathologic factors: (1) Acute gastroenteritis: mainly due to bacterial and viral infections, etc. Dietary habits, malnutrition, etc. can also induce the disease, often showing diarrhea, abdominal pain, vomiting, etc., which may also lead to the emergence of laborious and unshaped stools. (2) Ulcerative colitis: mainly due to immune factors, genetic factors, dietary impurity, etc., often showing abdominal pain, diarrhea, mucus, pus and blood stools, etc., which may also lead to the emergence of bowel movements that are difficult to form. Therefore, it is recommended to change your lifestyle habits when you have a hard, unformed stool for many days, and if your symptoms do not improve or worsen, it is recommended to seek medical attention as soon as possible to avoid delaying your condition.