Stool mucus and pus are different, generally based on the appearance and fecal routine can be initially distinguished. 1. Appearance: a small amount of mucus is usually physiological, mixed with the feces is often not visible, the mucus visible to the naked eye indicates an increase in the mucus content of the feces; pus is often accompanied by a large amount of mucus or even blood, the amount is large, yellowish or reddish in color. 2. Stool routine: physiological mucus in the feces without an abnormal increase in red blood cells, white blood cells; pus can be detected in the increase in white blood cells, combined with an increase in red blood cells, also known as pus and blood stool. Increased fecal mucus should be considered as a result of improper diet, intestinal dysfunction, or infection, and the presence of pus in the feces should be considered as a result of intestinal infection, inflammatory bowel disease, and perianal lesions. The presence of abnormally increased secretions in the stool requires medical attention for further laboratory tests and should not be judged on one’s own.