The statement that more ascites after transplantation indicates a better fetus is not true; massive ascites is a serious transplantation complication. A large amount of ascites after transplantation is usually the result of the occurrence of ovarian hyperstimulation syndrome, i.e., hyperovulation in vivo, which is a transplantation complication resulting from the development of multiple follicles. It often manifests as ascites, pleural effusion and decreased urine output. If the pregnancy is successful after transplantation, the ovarian hyperstimulation syndrome worsens, ascites increases, and nausea, vomiting, chest tightness, decreased urine output, and dyspnea can occur. This post-transplantation ascites is large and severe, and an abnormal reaction may occur that usually takes a long time to recover. Therefore, if ascites occurs after transplantation, severe cases need to be hospitalized for appropriate treatment. Fluid replacement or albumin injections are required. If necessary, puncture is needed to release thoracic and abdominal fluid for appropriate supportive therapy.