There is no easy way to determine cervical cancer by oneself, patients need to follow the doctor’s instruction to diagnose it through cervical cytology and HPV test, colposcopy, cervical biopsy, serum tumor marker test and so on. 1. Cervical cytology and HPV test: Usually, doctors will obtain cells from the cervix and detect cervical cancer lesions and cervical cancer cells through cervical cytology and HPV test. 2. Colposcopy: When the cytology examination is abnormal, colposcopy is also needed to further observe the cervical lesions. However, patients should be prohibited from having sex 72 hours before the examination, and prohibited from vaginal douching and vaginal medication 48 hours before the examination, so as not to affect the results of the examination. 3. Cervical biopsy: If there is any abnormal colposcopic site, the tissue should be removed for pathological examination, so as to clearly diagnose cervical cancer or precancerous lesions. However, patients should prohibit sexual intercourse 45 hours before the examination and avoid treatment during menstruation and acute inflammation of the cervix. 4. Serum tumor marker test: patients should check serum squamous carcinoma antigen, cytokeratin 19 fragment, alpha-fetoprotein, carcinoembryonic antigen, cancer antigen marker, etc., which is helpful for cervical cancer diagnosis. It is suggested that patients should diagnose cervical cancer through the above tests strictly under the guidance of doctors and actively cooperate with doctors for treatment.