Embryo grade 2 sac raising is an incorrect statement, it should be grade 2 embryo sac raising, and its success rate is usually around 50%, and the probability varies due to the individual’s physical condition as well as the quality of the embryo. IVF embryo grading is generally four grades, respectively, grade one, grade two, grade three and grade four. Among them, Grade 1 and Grade 2 are high-quality embryos, and if the woman’s body does not have endometrial hyperplasia, embryo allergy and hormonal abnormalities, the success rate of raising sacs with Grade 2 embryos is generally about 50%. It is recommended that both husband and wife go to the hospital for a pre-pregnancy eugenics health checkup to assess whether the body is suitable for pregnancy; quit smoking and drinking, develop good habits, and don’t stay up all night. Moderate exercise to maintain physical health, to avoid prolonged exposure to radiation or pollution in the environment, to get rid of toxic and harmful work environment; maintain a happy mood; avoid heavy physical labor. It is recommended that if a woman is ready to cultivate IVF, she should undergo a detailed physical examination to determine whether her organism meets the cultivation standards, and should not pay too much attention to the grade of the embryo, but should also pay attention to her own development potential.