Eugenics examination is mainly through blood test examination, physical examination, gynecological examination, etc. to minimize the occurrence of fetal birth defects. The items of eugenics examination include: a. Physical examination includes second sex characteristics, breast development, height, weight, head, neck, chest, abdomen, spine, limbs, etc., paying attention to the development of nutrition. Gynecological examination can understand whether there is any abnormality of external and internal genitalia, as well as inflammation or malformation of vagina and cervix. Third, laboratory tests: blood routine, blood type, coagulation function, liver and kidney function, blood sugar, electrolytes, thyroid function, hepatitis B virus surface antigen, syphilis spirochete antibody, HIV screening, etc.