It is possible to transfer two frozen embryos and have a three-vessel, three-goat situation. The reason for this may be that one of the fertilized eggs splits after the transfer, and due to the developmental totipotency of the transferred embryo, two separate embryos can be formed after the splitting, thus resulting in the occurrence of the three-velvet-three-goat situation. At the same time, it is not excluded that after the couple’s coitus before the transplantation, the transplanted embryo and the naturally conceived embryo will be implanted at the same time. Therefore, after the transfer of two frozen embryos, there is a possibility of intrauterine trichomonosyncytium, but in order to ensure the safety of the pregnant woman and the healthy development of the fetus, it is usually necessary to take abortion reduction after confirmation so that the embryos remain two. Therefore, it is recommended to do ultrasound in time to check the condition of the fetus and take timely measures to intervene in order to ensure the health of the mother and fetus during pregnancy.