If the doctor recommends immunohistochemistry when doing a cervical biopsy, it means that there are abnormalities in doing pathology and further tests are needed before deciding the next step of treatment. There are many diseases that cannot be diagnosed when pathological examination is done and there is a certain rate of misdiagnosis. If a tumor is suspected, then further immunohistochemistry can be done. If immunohistochemistry determines that there is only cervical precancerous lesion, cervical conization can be taken; if immunohistochemistry determines that it is cervical cancer, total hysterectomy is needed. Immunohistochemistry can determine whether it is squamous carcinoma or adenocarcinoma, etc. According to the result of immunohistochemistry, radiotherapy or chemotherapy can be taken after surgery, and timely treatment should be given if abnormalities are found, which can significantly improve the survival time and quality of life of patients.