Because the incidence of preeclampsia can reach 5% in all pregnant women, and even 8% to 9% in some special regions, due to its high incidence, once preeclampsia occurs, the pregnant woman develops hypertension, edema, proteinuria and affects the function of some important organs, resulting in convulsions caused by elevated blood pressure and cerebrovascular accidents. Then, due to the heart, hypertensive heart disease leads to an impairment of heart function, leading to heart failure, pulmonary edema, due to a large amount of urine protein leakage, leading to a hypoproteinemia-induced edema, ascites or thoracoabdominal effusion, all of which will affect the function of the heart and lungs.