There is no exact time for bowel cancer to go from early stage to late stage; it can take as little as a few months or as many as a few years, so it cannot be generalized. Bowel cancer belongs to the more common malignant tumors in clinic, and the most frequent site is rectum, followed by sigmoid colon. Since the pathological types of bowel cancer and individual physical condition are not exactly the same, there is no accurate data on the time from early to late stage. A short period of time can be a few months, while a long period of time can be several years or even decades, so the specific situation varies from person to person. After getting bowel cancer, patients will have bloody stools, change of bowel habit, and some of them will cause intestinal obstruction. If the above symptoms occur, it is necessary to pay attention to them and need to consult doctor in time, so as not to delay the condition and prevent further aggravation of the condition.