Pap level 1 means that no lesions are seen in the cervical epithelium, which is normal and is a type of cervical cancer screening. In clinical practice, cervical cancer screening basically uses liquid-based cytology, which is clinically known as TCT test and HPV test, and the two are combined for analysis to clinically understand whether there are lesions in the cervical epithelium and whether there is high-risk HPV infection. This is because the cause of cervical cancer has been identified as precancerous lesions of the cervical epithelium due to the persistence of high-risk HPV infection in the cervical epithelium. If there is no timely intervention, it may develop into cervical cancer. Therefore, cervical cancer screening must be paid attention to, and the occurrence of cervical cancer is eliminated by examining once a year and dealing with abnormalities in time. At present, relatively few cervical smears are used in clinical practice, and Pap smear is one of the tests done by using cervical smear.