When the ovary becomes enlarged after egg retrieval and there is no contraindication to transplantation, it can be transplanted within 3~5 days. If there are contraindications to transplantation, transplantation can be done in 1~2 months or longer. If a woman’s ovaries become enlarged after egg retrieval, but she is in good health, has no discomfort, and has no contraindications to transplantation, most women may need to be treated with transplantation within 3~5 days. If a woman develops ovarian hyperstimulation syndrome, combined endometrial abnormalities, uterine fibroids, hydrosalpinx, and other various organic diseases after egg retrieval, she needs to undergo timely treatment for the disease and transplantation after the disease is relieved and she is in good health. It may then be necessary for a woman to transplant after 1 to 2 months or longer.