Women can drink protein powder during the period of down regulation. When a woman needs to give down regulation drugs to promote the growth and development of follicles and ovulation before IVF, it is good to drink protein powder during this period to improve the body’s immunity and also to promote the growth and development of follicles. As long as women do not eat cold and spicy food during the period of down regulation, pay proper attention to rest, avoid exertion and cold, and keep a relaxed mood, they can improve their body resistance and immunity by walking, which is also beneficial to the regulation of menstrual cycle, so that down regulation can be carried out smoothly. The success rate of IVF can be improved by successfully obtaining high quality eggs before IVF, combining them with sperm in vitro to form fertilized eggs, and then choosing the right time to transplant them into the uterine cavity for implantation and growth.