There are some differences between men and women in terms of the cancers they are prone to get. For men, they mainly include lung cancer, stomach cancer and liver cancer, while for women, they mainly include lung cancer, breast cancer and colorectal cancer, etc. 1. Lung cancer: The incidence and mortality rate of lung cancer have been increasing rapidly in recent years, and there is a worldwide trend of increase. It may be obviously related to smoking and environmental pollution, among which smoking is the primary reason for the progressive increase of lung cancer mortality, while environmental pollution includes outdoor pollution and indoor pollution of small environment. Early stage non-small cell lung cancer can be surgically removed, while late stage small cell lung cancer can be treated by local radiotherapy combined with systemic chemotherapy; 2, gastric cancer: it is often related to poor living and eating habits, while the occurrence of gastric cancer is related to Helicobacter pylori infection, and genetic factors also play an important role in the occurrence of gastric cancer. Early gastric cancer can be treated surgically after diagnosis, while the prognosis of late gastric cancer is poorer; 3, liver cancer: it is a common malignant tumor, and China is a large country where hepatitis B and C diseases occur. Liver cirrhosis caused by hepatitis B or C will accelerate the development of primary liver cancer. And once liver cancer is combined with cirrhosis, it makes liver cancer less tolerant to chemotherapy and radiotherapy, and even directly affects the survival of liver cancer patients; 4. Breast cancer: it is an important killer of women’s health, and the incidence rate has been gradually increasing in recent years, and the occurrence of breast cancer in China has a tendency to be younger. In recent years, with the advancement of treatment, the survival rate of breast cancer has increased substantially; 5. Colorectal cancer: it is usually associated with dietary habits, living habits and genetic factors. Regular checkups and timely treatment of benign lesions such as colorectal polyps are important factors to prevent the occurrence of colon cancer. If colorectal cancer surgery is performed at an early stage, the survival period can be significantly extended.