The normal value of progesterone after successful in vitro transplantation is not significantly different from the normal value of progesterone after successful conception, and if the transplantation is successful, the progesterone value should not be less than 25ng/ml at least. most of the women who are assisted to conceive through in vitro transplantation may have ovarian insufficiency, and after the fertilized egg is transplanted, they need to use exogenous progesterone routinely for fetal preservation treatment, which commonly includes progesterone injection, taking Progesterone capsules and intravaginal progesterone vaginal gel are commonly used. The progesterone treatment after transplantation is mostly adhered to until the third month of pregnancy, after which the placenta starts to secrete progesterone, and low progesterone levels usually do not occur.