A very light and pale test paper on the 7th day of transplantation may be a sign of graft failure, or it may be a sign caused by testing too early. On the 7th day of transplantation, if the transplantation fails and the pregnancy test paper is used for detection, there may be very light and light red marks on the pregnancy test paper, which may be a manifestation of transplantation failure, and further dynamic testing of serum human chorionic gonadotropin can be used to help determine this. Some women use pregnancy test paper on the 7th day of transplantation, the increase in the levels of human chorionic gonadotropin, progesterone, estrogen and other sex hormones in the body is not very obvious, and the level of human chorionic gonadotropin in the urine is relatively low, so there may be a very light and light test results on the pregnancy test paper. It is necessary for women to choose the right time to use the pregnancy test paper to check after the transplantation under the guidance of medical professionals.