Colposcopy is not always necessary to do a biopsy, this is based on the situation observed under the mirror. Generally speaking, after cervical cancer screening TCT and HPV, if the HPV result is positive and the TCT result is negative, you can use the medicine for three months and then review again, and if it turns negative, you can review regularly every year, if it continues to be positive, you need to do colposcopy, and if it is not very good under the microscope, you need to take biopsy and send it to the pathology according to the specific situation. If the TCT result is positive, you should also do colposcopy to see the situation, the specific biopsy depends on the situation under the microscope.