The time required for a second transfer after a failed first transfer is affected by two main factors and cannot be generalized. The time required for the second transfer is in two cases: patients with frozen embryos, and patients without frozen embryos. 1. With frozen embryos: the so-called frozen embryos refers to the formation of a relatively large number of embryos after ovulation induction, egg retrieval and fertilization at one time. According to the regulations, a maximum of three embryos can be transferred at one time, and the remaining embryos will be frozen in a professional way. If an IVF attempt fails, another embryo transfer can be attempted with these frozen embryos. If there are frozen embryos, as long as the woman resumes her menstrual cycle and has natural ovulation, the embryos can be transferred again, usually followed by the second month. 2. No frozen embryos: For patients who do not have frozen embryos stored at the time of the second transfer, another IVF treatment will require another egg retrieval, and in order to allow a certain amount of time for the woman’s ovaries to be repaired, it is generally recommended that there be an interval of 2-3 months between treatments, and the doctor will need to decide on the timing of the re-treatment based on the patient’s ovarian reserve as well as the endometrium and other aspects. Before the second embryo transfer, the reason for failure can be comprehensively analyzed based on the results of the first examination and targeted treatment can be carried out. At the same time, one should keep a good mindset and deal with it under the guidance of professional doctors.