Vaginal bleeding in the tenth day of pregnancy, in the absence of a clinical history of trauma and sexual intercourse, is often caused by genetic deficiency of the embryo, and it is recommended to give antirefertilization treatment. Before settling the pregnancy an ultrasound is done to make sure that it is in utero and that the days of embryonic menopause match. After laboratory tests, such as blood tests for HCG and progesterone, it is found that if progesterone is reduced, clinical treatment with progesterone supplementation is available. It is also important to rest in bed, strengthen nutrition and eat less hot and dry food to avoid causing dry stools and aggravating vaginal bleeding with abdominal pressure in the clinic. If there is still vaginal bleeding after aggressive anti-natal treatment, it is very likely that it is caused by embryonic gene deficiency and miscarriage will occur.