There are many diseases that can cause mucus stools, mainly infectious diseases of the gastrointestinal tract, such as acute dysentery, chronic dysentery, non-typhoidal salmonella infections, paediatric diarrhoea, infantile diarrhoea, infectious gastroenteritis and other infectious diseases of the pulmonary gastrointestinal tract such as ulcerative colitis, colorectal cancer, irritable bowel syndrome, colorectal polyps, etc.