A Ki67 positive rate of 2+ indicates average cell activity and moderate tumor malignancy. Ki67 is an index in immunohistochemistry test, which reflects the index of tumor cell proliferation, Ki67 positive rate represents the cell reproduction activity, the higher the positive rate means the cell activity is high, and the malignant degree of the tumor is relatively high, Ki67 positive rate of 2+ belongs to the middle range, which indicates that the tumor cell activity is average, and the malignant degree of the tumor is medium. Ki67 indicator does not have specific significance, nor can it indicate the malignant degree of the tumor and the severity of the disease, it should be combined with other indicators to make a comprehensive judgment. Patients with Ki67 positive rate of 2+ should go to the clinic in time, complete the relevant examinations, and make a clear diagnosis under the guidance of specialists, so as to avoid delaying the condition.