Angiotensin is mainly a progesterone softgel, also known as progesterone hormone and luteinizing hormone, which can be used to treat organic disorders caused by progesterone deficiency and can be administered by vaginal insertion. The main effect can inhibit contractions, prevent the body from rejecting the embryo, and facilitate the implantation. The second action is to supplement the luteal deficiency to prevent miscarriage caused by luteal deficiency. It increases the effect of preventing the immune rejection of the embryo by the mother and prevents the rejection of the embryo by the organism. The use of Angiotensin after transfer is mostly recommended at bedtime.