Clinically, pelvic fluid often forms after egg retrieval, mainly because after each follicle is punctured, a considerable amount of follicular fluid flows into the rectal fossa of the uterus, and a collection of fluid is formed. This kind of effusion does not need to be eliminated clinically with drugs, but will be absorbed slowly on its own, most of them in about half a month, and will not cause symptoms clinically. However, it should be noted that after egg retrieval, there is a risk of follicular hyperstimulation, which can lead to pelvic effusion and ascites, which should be treated clinically. Otherwise, a large amount of ascites can often lead to electrolyte disturbances in the patient clinically, resulting in serious consequences.