Bright green stools, slightly sticky pus, with a sour odor may be due to bacillary dysentery, perianal abscess, intestinal infections and other causes. 1. Bacterial dysentery: Bacterial dysentery is mostly caused by the infection of dysentery bacillus, when the dysentery bacillus enters the digestive system, it will cause irritation to the intestinal mucosa, leading to inflammation, ulcers, etc., which will lead to pus in the stool, sour odor and other symptoms. 2. Perianal abscess: people suffering from perianal abscess will have exudates on the mucous membrane of the intestinal wall, which will cause pain in the anal area and pus and blood in the stool. 3. Intestinal infections: When the intestines are infected by bacteria or viruses, it may also lead to increased stool frequency, bright green stool, pus, sour odor. Bright green stool, slightly thick pus, sour odor may also have other causes, it is recommended to go to the hospital in a timely manner to improve the examination to determine the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.