Usually the transfer after egg retrieval is judged by the patient’s endometrial thickness and abdominal water volume, and can be divided into transfer in the same week and transfer after the second period, i.e. fresh embryo transfer and frozen embryo transfer. If the doctor recommends transfer after the second menstrual period, it is usually considered that the embryo transfer should be considered after the second menstrual period because the body is not in good condition and the endometrium is intact at that time. This is to avoid transferring before the endometrium has been repaired, which may result in a lower success rate. IVF for fresh embryo transfer is usually performed 3-5 days after egg retrieval, with no abdominal pain or ascites and good endometrial thickness, and embryo transfer can be performed, or blastocyst transfer can be performed in 5-6 days, and pregnancy can be determined after 2-3 weeks. If the mother has more eggs retrieved that week, with more ovarian stimulation, abdominal pain, ascites, thin endometrial wall, etc., or if she is not feeling well and has symptoms such as cold or fever, fresh embryo transfer is not suitable at this time, and the embryos will then be frozen and wait for the ovaries and endometrium to recover. Generally, frozen embryo transfer can be performed after the next month or the second menstrual period after egg retrieval, when the menstrual cycle is normal twice and the ovaries and endometrium recover their proper function, which makes them more suitable for transfer and can improve the transfer success rate. In addition, while waiting for the transfer, you should pay attention to maintain a good physical condition, eat a light diet, do not eat spicy and stimulating foods that are easy to be allergic, and keep warm in time. After transplantation, you should pay attention to bed rest, avoid holding urine, strenuous activities, etc., keep your body and mind happy, and follow the doctor’s instructions for regular review.