For cancer treatment and prevention, we advocate the "three early": early detection, early diagnosis and early treatment. Early symptoms of cancer are not obvious, mainly must be found by professional inspection. Once there are symptoms, most of the cancers are in intermediate stage or terminal stage.

In recent years, the incidence of cancer was significantly increasing. 90% of the early cancers have no obvious symptoms, may not be found unless checked by professional doctors in specialist hospital. Unfortunately, most cancer patients went to the hospital to see a doctor when symptoms appeared, when cancer has developed into intermediate stage or terminal stage at that time, and they lost the best treatment opportunity. Previously, cancers mostly occurred in older groups, but in the past 20 years, cancer incidence age was 15-20 years ahead of time, and the 35-55 age group has been the major incidence groups.

For cancer treatment and prevention, we advocate the "three early": early detection, early diagnosis and early treatment. The medical examination of cancer is the effectual means to find early cancer. Not everyone will be suffering from cancer, but we recommend that people should have at least one medical examination annually. To the people who have a family history of cancer, it is very necessary to have 4 medical examinations annually.

There are three groups need to do preventive medical examination:

1. Someone suffered from cancer among the direct relatives.
2. People over 45 years old.
3. Find some carcinogenesis factors.