Only satisfactory tct specimens can provide a reliable clinical basis, and it is also recommended that the following points be noted when taking tct specimens. Firstly, it is best to do the tct examination 3-7 days after menstruation, because the cervical secretion is less at this time, so the specimen taken is also satisfactory. Second, do not have sexual intercourse before taking the specimen and do not insert pills or douche into the vagina. Thirdly, there may be a small amount of vaginal bleeding after the specimen is taken, but it is not necessary to be nervous. Fourth, do not have sex for one week after the specimen is taken, and do not take a bath to avoid infection.