A positive screening test for colorectal cancer may refer to the screening method routinely used, which is a positive stool routine plus occult blood test, suggesting a possible small amount of gastrointestinal bleeding. However, a positive occult blood test alone does not necessarily mean that there is colorectal cancer. Therefore, a positive screening test should be combined with other clinical symptoms, such as blood in the stool, severe weight loss, abdominal pain and abdominal mass, etc. If the condition allows, it is necessary to go for colonoscopy and get clear pathology through colonoscopy in order to diagnose whether it is colorectal cancer. Of course, it is better to have no problem and continue to have regular physical examination and screening later. If there is any problem, it is better to have surgery early.