Test the early pregnancy test paper after transplantation, if two lines appear, it indicates a successful pregnancy. If the second line gradually fades, the possible reasons are: 1) biochemical pregnancy, which is not normally bedded, but the HCG is measured in the blood in the urine, so the test paper will fade; 2) fetal abortion, the embryo does not continue to divide and develop, so the phenomenon of abortion is caused, the test paper will also gradually fade; 3) ectopic pregnancy, which means that the embryo is not bedded in the uterus, but in the In this case, the HCG may drop and the test paper will become lighter. The reason for the change in HCG can only be determined by going to the hospital to check the blood HCG and ultrasound to see where the embryo is bedded and then the reason for the change in HCG.