It is not possible to generalize about how many embryos can be successfully placed at one time with IVF. There may be cases where none of the embryos are successful or all of them are successful, and the details will vary from person to person. IVF is an assisted reproductive technology, most of the embryos can be placed two to three at a time, the success rate of embryos in the average of about 30% to 40%, but subject to the individual endometrial condition, fallopian tube condition and other factors, so there may be a transfer of the embryos failed to succeed, of course, may also occur in all cases. When assisted reproduction technology is needed, you should go to a regular hospital and under the guidance of a doctor, and you should also pay attention to rest and avoid exertion.