The severity of the patient’s condition can not be defined by ki67, ki67 index is 20 whether it is serious need to improve the enhanced CT, PET-CT and other related examinations to further determine the scope of the lesion to assess. Ki67 antigen (MIB-1), a marker of cell proliferation activity, is a nuclear antigen for cell proliferation and is mainly used to determine the proliferation activity of tumor cells. Studies have shown that Ki67 proliferation index has a close relationship with the degree of differentiation, infiltration or metastasis and prognosis of tumors, and is one of the important reference indexes for judging the prognosis of tumors. If the result of Ki67 test is abnormal, it is recommended to consult the relevant departments of regular hospitals in time, and evaluate the degree of development of the patient’s disease by combining the medical history and other test results with the doctor’s help, so as to make early diagnosis and treatment, so as to avoid delaying the condition and losing the chance of surgery.