Bowel cancer may develop into stage II-III within a year’s time, because the growth rate of intestinal tumor is also faster, usually in a year’s time it is possible for the tumor to occupy the intestinal canal for a week. In addition, when the tumor continues to grow, it may invade deeper into the intestinal canal, for example, it may reach the subplasma membrane or even invade the plasma membrane, and there may be metastasis of peri-intestinal lymph nodes. Specifically, after surgical treatment, the stage of the tumor can usually be further determined by the pathological results. If there is no lymph node metastasis, it is possible that the tumor is in stage II. If lymph node metastasis is present, it is usually at stage III. When the patient develops some symptoms, such as vague abdominal pain, increased frequency of stool, or blood in stool, timely examination is needed.