Ki67 is not the higher the better, Ki67 belongs to the proliferative antigen, the higher Ki67, the faster the tumor cells proliferate, the higher the malignancy of the cells. Immunohistochemical staining is usually used to detect the positive rate of Ki67 in tumor tissue sections from patients, and the higher the positive rate of Ki67, the faster the growth of tumor cells. Different cancers and different laboratories have different standards for Ki67, for example, some breast cancer patients with Ki67 values less than 15% are considered to have low expression, and Ki67 values greater than 30% are considered to have high expression. Ki67 is an indicator for evaluating the speed of cell proliferation, and for the evaluation of the disease, it should be combined with enhanced CT, PET-CT, etc. for a comprehensive evaluation. When the patient has a high Ki67, it is recommended to consult a doctor in time to have a professional doctor make a diagnosis and give the appropriate treatment plan.