Premature ovarian insufficiency (POI) refers to women before the 40 years of age who suffer clinical manifestations of ovarian recession. Now, there is no exact and effective treatment to restore ovarian function. Human amniotic Epithelial cells (hAECs) are derived from human amniotic epithelium. hAECs retain the characteristics of embryonic stem cells, as well as a strong differentiation potential and plasticity. Experiments show that the fertility of mice is significantly improved after amniotic epithelial cells implantation. In order to further study the role of hAECs in POI treatment, this project will conduct minimally invasive implantation with hAECs in 20 cases of POI patients, and evaluate the changes of ovarian function and the safety of hAECs implantation. hAECs is prepared by Chongqing iCELL Biotechnology Co.,Ltd., which is a subsidiary of Shanghai iCELL Biotechnology Co.,Ltd.