If there is blood group incompatibility and stillbirth, it is possible that the stillbirth is related to the blood group incompatibility; if there is no blood group incompatibility, the stillbirth is not related to the blood group. There are many causes of stillbirth, such as umbilical cord torsion, umbilical cord kinking, umbilical cord wrapping, umbilical cord entanglement, placental abruption, placenta previa, antiphospholipid syndrome, poorly controlled diabetes mellitus, and high blood pressure during pregnancy, etc. All of these may result in stillbirth. In addition, the presence of fetal malformations, fetal infections, severe hereditary disorders, and maternal/female blood group incompatibility, any of these causes can also result in stillbirth. Therefore, stillbirth needs to be further analyzed in the context of the specific situation to find the cause. It is recommended to follow the doctor’s advice to take obstetric checkups on time during pregnancy, and if there is any problem, go to the hospital in time for checkups and follow the doctor’s advice to deal with the treatment.