The most common fistulas are hemorrhoids, anal fissures and fistulas. The incidence of hemorrhoids is 67% for women and 53.9% for men, and the incidence is higher for women at any age. This is why it is said that “nine out of ten people have hemorrhoids”. There are many reasons for the development of hemorrhoids, such as sedentary, standing, strain, etc., so that the body is in a fixed position for a long time, which affects blood circulation, causing excessive filling of hemorrhoidal veins; insufficient exercise, slowing intestinal peristalsis, slowing the downward movement of feces or habitual constipation, compressing the veins; excessive drinking and eating spicy food, will stimulate the anus and rectum, so that the hemorrhoidal venous plexus is congested, these are the reasons for the increased incidence of hemorrhoids. According to clinical observation and statistical analysis of census results, there are significant differences in the prevalence of the disease among patients of different occupations, and the prevalence is significantly higher among clerical workers, white-collar workers and drivers. The clinical manifestations of hemorrhoids are blood dripping during stool or a lump coming out of the anus. The nucleus of the hemorrhoid is located in the mucous membrane inside the anus called “internal hemorrhoid”, early internal hemorrhoid is invisible to the naked eye, mainly to blood, can be accompanied by anal swelling, occasionally accompanied by pain, through the correction of bad habits, the appropriate use of drugs can control the symptoms. In the later stage of internal hemorrhoid prolapse, patients can feel the polyp-like nucleus of hemorrhoid prolapse after defecation, and in serious cases, it cannot be reset, which can cause persistent pain and greatly affect the quality of life, so it is best to choose surgery. The hemorrhoids located near the outside of the anal opening are called “external hemorrhoids”, which can be seen normally and do not have any obvious symptoms, and basically do not affect working life. The procedure is short and bleeds little. There is almost no post-operative pain, and good anal function and appearance can be restored, making it the more commonly used surgical procedure nowadays. An anal fistula is an infected duct that connects the rectum to the skin around the anus, which can intermittently discharge secretions and pus and is difficult to heal on its own. The most important thing to do is to seek professional help from a specialist as soon as possible if you have these symptoms. Many patients who suffer from anal diseases find it difficult to talk about them, delaying the best time for early treatment. Early hemorrhoids can be improved by correcting bad habits and using appropriate medication. The main reason why many people don’t take blood in the stool seriously is because they think it’s “internal hemorrhoids” and take some medication to get rid of it. Hemorrhoids are a benign disease that rarely poses a serious health risk except for severe heavy bleeding, which is why many people ignore them. Is there a relationship between hemorrhoids and rectal cancer? The answer is nothing, hemorrhoids are basically not malignant. Does that mean we can ignore blood in the stool? The answer is no. The reason is that more than 90% of rectal cancer cases are easily misdiagnosed as hemorrhoids in the early stages! Rectal cancer is a malignant tumor with high incidence in the gastrointestinal tract, which can be life-threatening if not diagnosed and treated early. Rectal cancer is easily misdiagnosed as hemorrhoids in the early stage, and such misdiagnosis is either self-misdiagnosis by patients or speculation by medical personnel. The main reason for the high misdiagnosis rate is that there are many similarities between the clinical manifestations of rectal cancer and hemorrhoids, such as blood in stool and increased frequency of stool. In fact, as long as patients are alert and seek medical treatment early, early detection of rectal cancer is possible through anal finger, anoscopy or colonoscopy. If early detection is possible, the treatment effect of rectal cancer is very good. “Although anal diseases are small, they have a great impact on work and life, so going to a regular hospital is the right choice.