The obvious success of abortion preservation includes the disappearance of clinical symptoms of preeclampsia, good examination results, and so on. 1. Disappearance of clinical symptoms: Usually, patients with signs of miscarriage will have lower abdominal pain and vaginal bleeding, and the clinical symptoms will disappear gradually if the treatment is effective after the fertility preservation treatment. 2. Good test results: After the treatment of fertility preservation, the progesterone index will be improved. In addition when the patient has preeclampsia, gynecological color Doppler ultrasound will show that there is effusion around the fetal sac, and if the fertility preservation is obviously successful, the effusion around the fetal sac will decrease and disappear, and will no longer increase in size. Patients who experience the above symptoms should actively seek medical attention and undergo relevant examinations and treatments under the guidance of their doctors.