Women who undergo tubal imaging can use both iohexol and iodophorol. Because of the possible adverse effects of the contrast medium on the embryo and on the quality of the follicles, it is usually recommended that pregnancy be avoided in the month in which the contrast medium is used, and that coitus be rescheduled half a month after the contrast medium is used. Therefore, it is recommended to prepare for pregnancy 3 months after iohexol contrast, as the body needs to completely metabolize the iohexol. For women who want to prepare for pregnancy as early as possible, they can also consider preparing for pregnancy after having a normal menstrual period after the imaging. During the preparation period, folic acid should be taken, and if necessary, special ultrasound should be done to monitor the growth and development of the follicles, and according to the results, arrangements should be made for coitus and preparation for pregnancy.