Anyone can have peritoneal cancer, but those who have a family history of peritoneal cancer, have been exposed to toxic and harmful substances for a long time, and like to smoke and drink are more likely to get peritoneal cancer. 1. Family history of peritoneal cancer: if there is a history of this disease in the patient’s family, especially in the immediate family, then it is very likely that the patient has some genetic defects. At this time, the peritoneal epithelial cells of the patient will be prone to malignant transformation, which will be easily transformed into peritoneal cancer. 2. Long-term erosion by toxic and harmful substances: for those who are often exposed to ionizing rays, radioactive substances and other toxic and harmful substances, the DNA in their bodies will be damaged, which will lead to the inactivation of oncogenes and increase the possibility of peritoneal cancer. 3. People who like smoking and drinking: cigarettes contain a lot of harmful substances, such as tar, which can cause cancer. For people who like smoking, these substances can easily enter the body through blood circulation, thus triggering peritoneal cancer. Alcohol is mostly metabolized by liver, but it is easy to produce acetaldehyde, which is a kind of carcinogenic substance and also easy to induce peritoneal cancer.