Family history of tumors refers to first-degree relatives, i.e., parents and/or second-degree relatives, i.e., grandfathers, grandmothers, uncles, etc., who have malignant tumors. These people can develop some rare tumors, such as breast cancer in men in the family line. In people with a family history of cancer, the age of onset is significantly lower than in the general population, and the age of onset is close to a fixed value for different family members. People with a family history of tumors are advised to have regular medical checkups. In addition to the family history of tumor, the development of malignant tumor may also be affected by other factors. For example, it has a lot to do with the usual eating habits, if long-term smoking, alcoholism, frequent consumption of fried, pickled and moldy food, staying up late at night, etc., will increase the chance of disease. So should develop good habits, improve the diet structure, can be appropriate exercise to enhance physical fitness.