Under the leadership of Prof. Jing He, the team has been devoted to research of the prevention and treatment of early-onset preeclampsia. By using various techniques such as molecular biology and placental pathology, the study focuses on the etiology, pathophysiological development and the effect on prognosis of early-onset preeclampsia, and the preventive effect of drugs on the recurrence of early-onset preeclampsia. Many medical papers have been published and the team has accumulated rich practical experience in the prevention and treatment of early-onset preeclampsia.