Colon polyps are a kind of disease that may become cancerous. To prevent cancer, once suspicious signs are found, we should adhere to Chiang Kai-shek’s principle of “it is better to kill three thousand people by mistake than to spare one”. In medical science, any polyp-like lesion protruding from the mucosal surface of the intestine into the intestinal lumen is called polyp before the pathological nature is determined. According to the type of pathological polyps can be divided into: 1, adenomatous polyps: this is the most common type of polyps, including papillary adenomas. 2, inflammatory polyps: the result of proliferation of intestinal mucosa stimulated by long-term inflammation, similar to the formation of calluses. 3, misshapen polyp: polyps caused by embryonic abnormalities, associated with heredity. 4, other types of polyps: such as mucosal hypertrophy and hyperplasia to form hyperplastic polyps, lymphoid tissue hyperplasia, carcinoid tumors, etc. Clinical polyps can be single or multiple, colorectal polyps are more common and more obvious symptoms. The clinical manifestations of colonic polyps are mainly changes in stool shape and stool habit, and in severe cases, intermittent blood in stool or blood on the surface of stool. Secondary inflammatory infection may be accompanied by a large amount of mucus or mucus blood stool; mild symptoms may include urgency, constipation or increased frequency of stool, and unformed stool. If blood or mucus stool is present, most people will pay attention to it; however, if the patient presents with the more common irregular stool, many people will not pay attention to it and delay the diagnosis and treatment. How to differentially diagnose colonic polyps when manifesting as irregular stools? The following three steps are introduced: Step 1: Self-observation Research has found that: smoking smoking is also closely related to adenomatous polyps, smoking history within 20 years occurs more often with small adenomas, while smoking history in more than 20 years is accompanied by large adenomas, food containing more fiber polyps occur less, and vice versa; if the disease is long, and throughout the process If the duration of the disease is long and there is no overall tendency for the body to change throughout the process, the possibility of functional bowel disease is considered high. Step 2: Stool routine + occult blood test This test is inexpensive, non-invasive and painless, and is the most economical way to screen for colon lesions, mainly depending on the presence or absence of occult blood. The so-called occult blood is the hidden bleeding that cannot be seen by the eye, because the amount is small and cannot be observed by the naked eye. However, such a good test also has the disadvantage of a high false-negative rate. There may be occult blood, but the piece of stool with blood is not taken for testing, so the test result is negative. I usually have the patient check their stool for 3 consecutive days and instruct them to always look at the most abnormal part of the stool when they take it each day. If all 3 stool tests are normal, then I will tell patients who are afraid of colonoscopy that they can postpone it for some time; however, if one of the colonoscopy results is found to be problematic, I will advise the patient to go to step 3. Step 3: Colonoscopy Many people are afraid of colonoscopy, but if it really comes to the point where they have to do it, they still have to do it. Colonoscopy is the best test to find colon polyps. If a polyp is found on colonoscopy, it will be treated either directly with freezing, ligation, etc., or elective inpatient surgery, etc., depending on the situation, and subsequent treatment and follow-up programs will be arranged after the pathology results.