Frequent diarrhea usually does not get bowel cancer, bowel cancer is often caused by other factors. Clinical bowel cancer can be caused by environmental factors, which are mainly related to dietary structure, such as high-fat, low-fiber diet, which can easily lead to increased incidence of bowel cancer; secondly, if patients have colorectal polyps and other diseases, they may be transformed into bowel cancer; in addition, genetic factors can also lead to it, such as immediate family members of patients with bowel cancer, the incidence rate of bowel cancer in the next generation will be increased accordingly. Inflammatory bowel diseases, including Crohn’s disease or ulcerative colitis, can also lead to bowel cancer. Clinical causes of diarrhea include indigestion, due to insufficient gastric power, resulting in food retention in the stomach, which leads to diarrhea; there are also bacterial infections caused by unclean diet, which can lead to increased intestinal peristalsis. In addition, acute gastroenteritis and kidney yang deficiency will cause diarrhea. Therefore, there is no clear correlation between frequent diarrhea and intestinal cancer. It is suggested that patients should avoid eating spicy, cold and irritating foods, develop good living habits and pay attention to personal and dietary hygiene.