Positive h3k27me3 indicates that a tumor may be present in the body, but the patient needs to undergo further tests such as biopsy and imaging to determine the specific location of the tumor, as well as its benign or malignant nature. Immunohistochemistry h3k27me3 positive on behalf of the body may appear in the tumor, but also depends on the immunohistochemistry of the specific site of occurrence, so also need to rely on further examination, usually on the basis of the positive test results of the imaging examination (such as CT, nuclear magnetic resonance, etc.), biopsy, laboratory tests and so on. If the diagnosis of malignant tumor is confirmed, targeted treatment should be taken as early as possible, such as surgical treatment, chemotherapy, immunotherapy, etc. If excluded, patients are required to do regular checkups. If the immunohistochemistry test result is abnormal, it is recommended to consult a doctor in time to clarify the cause of the disease with the help of the doctor and carry out targeted treatment or therapy.