Guan Ning, director of Physical Examination Center of Provincial Cancer Hospital, reminded that ordinary physical examination, which many people insist on once a year, is not a complete substitute for anti-tumor screening. Because the general physical examination is only to check the heart, liver and kidney functions as well as blood sugar, blood fat, blood pressure, etc., to grasp the general condition of the human body, and usually can only find some common chronic diseases at an early stage. Tumor screening, on the other hand, is more specialized, and in addition to early detection, it will also detect some functional changes and diseases that increase the chances of cancer, and evaluate and intervene in these conditions, so as to block the occurrence of cancer due to pre-cancerous lesions or diseases to the greatest extent possible. Therefore, people who have symptoms of discomfort in the relevant areas, or have a family history of cancer, long-term irregular life, dietary disorders, and are at high risk of developing cancer should consult their doctors as early as possible, and conduct cancer screening in a reasonable manner.