After more than ten years clinical studies and practice, Fenglin Chen, a specialist in gynaecology and obstetrics, president of Beijing Antai Hospital, has developed gene vaccine in treatment for the first trimester miscarriage as well as the treatment for incompetent cervix in third trimester miscarriage with a biotic hoop. This technology of gene vaccine obtained tow international patent with it’s high cure rate of 98%. Up to now, there are more than five thousands of patients successfully get pregnant after the treatment. The patent numbers are 200480029919.8 and 200480029918.3. Meanwhile, we carried out a policy of conduct the treatment under a contract, that is to say, the patient, who suffers from miscarriage, could sign a contract about treatment for miscarriage on the basis of a definitely diagnosis. And all the cost of this procedure is ＄30,000. Once the agreement is signed, the patient must be strictly under supervision of a physician. On this basis, if the patient failed to conceive within two years, all the health care cost will be refunded.