In clinical medicine formulations have injection, tablets, capsules, oil and so on, different drugs through different channels to be able to absorb. Ovulation drugs need to be subcutaneous in order to be absorbed, if the hit on the belly is convenient and relatively simple, such as the clinical use of Gonafen, is through the subcutaneous injection to absorb. But the application of this drug must be applied under the guidance of a doctor, and the first injection must be completed under the guidance of a doctor, so that the patient can go home to their own subcutaneous injection. And the dosage must be strictly controlled, so as not to cause adverse consequences in the clinic. It is also recommended to go to the hospital to give regular ultrasound examination during the use of medication, to understand the growth of follicles, and if necessary, to give guidance to coitus in order to improve the chances of pregnancy.