Objective To analyze the expression of autophagic proteins Beclin-1 and LC3-II in placenta peeling surface maternal blood of preeclampsia and placental CD8~+T cell infiltration,and explore the correlation between autophagic protein expression and CD8~+T cell infiltration. Methods 30 cases of normal pregnant women were collected as the control group,28 cases of severe preeclampsia and 34 cases of pregnant women with mild preeclampsia were collected as the experimental groups. ELISA was used to detect the lev...