There are two main lines of cervical cancer prevention. The first line is the vaccine, but because the HPV vaccine is still in the clinical validation stage on the mainland, it is estimated that it will take another 2-3 years, so the first line cannot be achieved for the time being. The second line is early screening for cervical cancer, which has a very high chance of screening. Screening consists of two tests, one of which is cytology of the cervix. The doctor takes a brush and scrapes the top of the cervix to remove some cells to see if they have cancer potential. The other is HPV screening, which is recommended once every one to two years. There are some obvious characteristics of early cervical cancer, such as smelly leukorrhea, blood, or blood after sex. When these problems occur, it is recommended to go to the hospital for examination as soon as possible to rule out the presence of other problems.