Peritoneal carcinoma is a malignant tumor that originates from the peritoneal mesothelium. Peritoneal cancer is a relatively rare cancer, which refers to malignant tumors originated from peritoneal mesothelium. Early symptoms are not obvious or asymptomatic and not easy to be detected, and peritoneal cancer usually shows multifocal growth, and also covers uterus, rectum, bladder and other parts of the body. Patients with peritoneal cancer should avoid spicy, stimulating and easy flatulence food, and their diet should be light and easy to digest, such as millet porridge, corn soup, egg soup and so on. Patients with peritoneal cancer should try to choose surgical resection treatment, and if necessary, they can take trastuzumab, bevacizumab and other medicines according to doctor’s instruction, which may cause adverse reactions such as diarrhea, vomiting and so on. It is suggested that patients with early symptoms of peritoneal cancer should go to the hospital for examination in time, and under the guidance of doctors, they should take active treatment, and at the same time, they should pay attention to observing their physical condition.