It is recommended that you first find out the causes of habitual miscarriage: 1) abnormal sperm and eggs: please check the chromosomes of both parties and the male partner’s semen for abnormal sperm. 2) Insufficient progesterone in early pregnancy: next pregnancy is to check. (3) Uterus abnormalities: the uterus is the place to nurture the fetus, uterus abnormalities are easy to miscarriage. Hysteroscopy can be done. 4) Mental factors: great mental trauma, very rare. Now make hysteroscopy first, the most realistic.