Frequent farting and thinning of stools are usually caused by colitis and intestinal dysfunction, and may also be the manifestation of colorectal cancer. 1. Colitis: it is usually caused by immunity decline, germs infection and insufficient intestinal blood supply. It may be accompanied by abdominal distension, diarrhea and other manifestations. It may even cause intestinal flora imbalance, resulting in the symptom of frequent farting with thin stools. 2. Intestinal and gastrointestinal dysfunction: generally caused by improper diet and indigestion, so that food cannot be fully digested and absorbed in the intestines and stomach, resulting in flatulence, satiety, and frequent farting and thinning of stools. 3. Colorectal cancer is manifested by changes in stool characteristics, such as diarrhea, constipation, thinning of stool, discharge of mucus, pus and blood stools, accompanied by emaciation, and also frequent farting. If the above situations occur, it is recommended to go to the hospital for consultation, relevant examination, clarification of the cause of the disease and treatment, so as to avoid delaying the condition.