With the development of medicine and the need of diagnosis and treatment, the importance of pathological diagnosis in clinical diagnosis is gradually recognized by the majority of medical personnel, but as a professional diagnostic tool, many patients do not know much or do not pay enough attention to it, and often give up the opportunity of pathological examination, which can easily leave great hidden dangers, which is especially important for patients with malignant tumors. This is especially important for patients with malignant tumors. For example, if a lump is found in breast, corresponding examination should be done in time and the nature of the lump should be determined through lump puncture and intraoperative rapid frozen pathology before deciding the next treatment. For example, colposcopy, gastroscopy and enteroscopy of gynecological tumor, esophageal tumor and gastrointestinal tumor can make a more accurate pathological diagnosis and lay a good foundation for further treatment. For example, if early stage cancer of stomach (the lesion of gastric cancer is limited to mucosal layer or submucosal layer) can be detected early and operated in time, its 5-year survival rate is about 90%, and other special treatments are generally not needed after surgery. Moreover, some advanced stage patients lose the chance of surgery, and even if they can be treated surgically, chemotherapy must be given after surgery, which is a considerable burden both economically and physically. Early detection, early diagnosis and early treatment are the fundamental measures to improve the survival rate of tumors. Although the incidence rate of malignant tumors is increasing year by year, with the improvement of people’s health awareness and the increasing awareness of regular medical checkups, early detection and treatment can be achieved through medical checkups and pathological examinations, such as medical checkups or screening examinations for cervical cancer (cell smear or thin layer liquid-based cytology examination TCT), which can obviously detect whether the cancer is early and take appropriate treatment. The incidence of tumor can be greatly reduced or the cure rate of tumor can be improved by taking corresponding treatment or preventive measures. It is believed that in the near future, medical scientists will be able to comprehensively understand and better deal with malignant tumors, so that the general public will no longer be afraid of talking about cancer. If a patient is diagnosed with advanced malignant tumor after the surgical removal of a certain part of the body, and the patient does not have pathological examination in the first or later surgeries, the treatment time is lost due to the lack of early and clear diagnosis, resulting in irreversible and serious consequences, even the cost of life. No one wants to see such a situation, so we repeatedly emphasize the importance of pathological examination, and hope that the majority of patients can fully understand this point, do not miss any opportunity to do pathological examination, which is responsible for their health and life, but also for your family.