In IVF treatment cycles, multiple eggs are usually obtained in a single ovarian stimulation cycle due to gonadotropins and other drugs, resulting in multiple embryos, while no more than 2 embryos are transferred at a time and the excess embryos are frozen. For those who cancel a fresh cycle of full embryo freezing or have remaining embryos frozen, the thawed embryos can be transferred in the next treatment cycle, called a frozen-thawed embryo transfer. The procedure for freeze thaw embryo transfer: The woman will come to the hospital on the 2nd or 12th day of her menstruation, register for an ultrasound and complete preoperative tests. On the second day of menstruation, the patient needs to take oral Glivec for the alternative cycle protocol. On the 12th day of menstruation, the patient needs to monitor the dominant follicles until they are expelled. When the hormone level and endometrium meet the criteria for transplantation, the transplantation procedure can be planned. Intercourse is prohibited after the procedure is scheduled. Patients who are scheduled for transplantation need to come to the hospital the afternoon before transplantation to sign the informed consent form, pay for the procedure, and have a vaginal douche. The female partner should come to the hospital at 2:30 pm to attend our center’s awareness session. The nurse will check the patient’s identity and review the three original documents in order according to the surgery situation. 2. At the same time, the nurse will issue a discharge card. Patients who can be discharged after the surgery will bring their discharge card, payment invoice and consultation card to the discharge office on the first floor of the inpatient department. 3.After reviewing the documents, the nurse will lead all the patients to the operating room on the ninth floor, and the operating room nurse will help you to inject progesterone injection. 4.After the injection, the nurse will explain the precautions related to the surgery and the post-operative medication. Please listen carefully to the lecture. 5.After the education, the patient will wait for the surgery. During the waiting period, please drink about 800ml of water to keep the bladder full. 6.After the operation, the doctor will inform you about the embryo transfer, the nurse will issue the medication, and you can go home after half an hour of rest. 7.Afterwards, follow the doctor’s prescription for medication, urine test for 12 days after the transfer, and ultrasound for 30 days after the operation for successful pregnancy. 8.The hospital will follow up the post-operative patients regularly.