Tretinoin acetate is often referred to as a down-regulator. Tretinoin acetate is often injected during IVF in order to mediate the secretory function of the pituitary gland and inhibit the pituitary gland’s secretion of luteinizing hormone, which prevents spontaneous ovulation and allows for more developed follicles and follicle quality. Ovulation stimulation treatment can be done after tretinoin acetate injection, which can better decide the time of egg retrieval and intramuscular HCG injection. The success rate of IVF is low, about 30%. Before undergoing IVF, it is important to undergo a full physical examination and choose the right IVF method. The price of IVF is around$30,000-$50,000, with some variations depending on the level of the hospital. In order to guarantee the results of IVF, the body should be adjusted to the best condition before IVF, and a healthy lifestyle should be adopted to strengthen the immunity of the muscles and quit smoking and drinking to improve the success rate of IVF.