The prevalence of cancer is a cause for concern. Statistics show that cancer patients generally have certain specific character traits, which make them more susceptible to cancer than people with other personalities, and this character is therefore known as the “cancer character”, also known as the “C-type character”. This character is known as “cancer character”, also called “C-type character”. It is mostly manifested as: introverted, obedient on the surface, but behind the scenes, he is angry and struggles with pain; he is often depressed and sulks, but doesn’t like to vent his anger; he is easy to be tense, and a small thing can make him anxious; he is afraid of competition and escapes from the reality, and he is not good at socializing with other people, and so on. Experts pointed out that cancer prevention should first learn to clean up the “emotional garbage”, do deep breathing when the mood is poor, shout a few times to an open place, and talk to friends and relatives or even a counselor; secondly, learn to “live slowly”, and don’t fall into the “workaholic” category. “workaholic” or “desperate”.