No coitus a few days before frozen embryo transfer. It is better not to have intercourse a few days before the frozen embryo transfer, especially in the 3 days before the transfer, you should try to avoid intercourse, because the transfer tube has to enter the uterine cavity through the vagina and cervix to implant the fertilized egg into the uterus, if the patient has intercourse before the transfer, the process of the transfer operation may bring the bacteria into the uterine lining, increase the chances of infection, which will affect the implantation of the fertilized egg. It is recommended that patients avoid coitus before and after the frozen embryo transfer, avoid excessive tension and anxiety, maintain a good mood, and ensure sufficient rest, do not run and other strenuous exercise, in order to ensure that the patient’s physical condition at the time of the transfer is good, and to increase the success rate of the transfer.