In the early stage of colon cancer patients, there are no specific symptoms. Many patients visit the hospital and find positive results of occult blood test in the stool when they check the stool. If the patient’s disease progresses, some specific symptoms will appear, mainly as follows: 1. changes in stool habits and stool properties, such as bloody stool, pus-blood stool, and symptoms such as urgency and heaviness. Some patients will have alternating diarrhea and constipation; 3. Some patients will have abdominal pain, which is a common symptom of ascending colon cancer patients; 4. For example, emaciation, anemic appearance, fever.