In addition to colonoscopy, there are other commonly used methods such as palpation, percussion, fecal occult blood test, fecal culture, abdominal CT, abdominal ultrasound and fecal DNA test. 1. Palpation, percussion: by touching the patient’s abdomen with or without mass, hardness, pressure and pain, etc., the patient’s initial diagnosis, percussion can observe the patient’s intestinal sound changes, can be a preliminary understanding of the patient’s intestinal tract with or without obstruction, inflammation, etc.. 2. Fecal occult blood test: by checking the red blood cells and hemoglobin in the feces, to determine whether the patient has gastrointestinal bleeding. 3. Stool culture to observe whether there is Helicobacter pylori infection, which is one of the common digestive tract infections. 4. Abdominal CT, abdominal ultrasound: mainly to observe whether there are organic lesions and space-occupying lesions in the abdomen. 5. Fecal DNA test: It is suitable for people who are not suitable or willing to undergo colonoscopy, and has a high detection rate for intestinal cancer, but it is expensive. It is recommended that patients should consult their doctors and choose the appropriate examination method under the guidance of professional doctors.