Mucus is a gelatinous liquid produced by the intestinal mucosa, which may be clear-colored or yellowish-white, and the liquid is relatively sticky. It can be divided into physiological mucus stool and pathological mucus stool. 1. Physiological mucus stool: mucus is a gelatinous liquid produced by the intestinal mucosa in the body, which can resist the attack of various microorganisms in the outside world and also play a lubricating role. If affected by non-disease factors, it will lead to a small amount of mucus in the stool, which may be transparent or light yellow in color, with a relatively small amount and no other uncomfortable symptoms. 2. Pathological mucus stools: pathological mucus stools, mucus may be yellowish-white, opaque, sticky, and related to disease factors, such as enteritis, bacterial dysentery, and need to go to the gastroenterology department in a timely manner. Mucus alone can not accurately determine the cause, but also need to be combined with the characteristics of the medical history, other test results to make an accurate judgment, it is recommended to clarify the cause of the disease under the guidance of a doctor.