There is no specific figure for the success rate of IVF at the age of 39. The success rate is related to factors such as age and physical condition, if you want to do IVF you should pay attention to rest and diet in general. IVF can generally be successful if the sperm and eggs are of good quality. Although the success rate is related to the woman’s age to a certain extent, age is not a decisive factor in determining the success of IVF. It is recommended that couples preparing for pregnancy go to the hospital for a pre-pregnancy eugenic health checkup to assess whether their bodies are suitable for pregnancy; quit smoking and drinking, develop good living habits, and don’t stay up late. Avoid prolonged exposure to radiation or pollution in the environment, to get out of the toxic and harmful work environment; maintain a happy mood; avoid heavy physical labor. During the preparation for pregnancy, you should eat more food rich in protein, such as eggs, pork lean meat, soy products, milk and so on. It is also necessary to properly supplement shrimp, fish, pork liver, oats, walnuts, peanuts and other foods, eat more fresh vegetables and fruits, to ensure that the intake of food nutritionally balanced, to avoid a single nutrition.