Women in preparation for pregnancy need a variety of checkups, including ultrasound examination of the reproductive system, routine tests of leukorrhea, cervical cancer screening, endocrine examination, eugenics and related laboratory tests. 1. Ultrasound examination of the reproductive system: during pregnancy, women need to have ultrasound examination of the uterine adnexa to determine whether there are fibroids, ovarian cysts and other organic lesions. If factors unfavorable to pregnancy are found, they will be handled promptly. 2. Routine leukorrhea test: women who are preparing for pregnancy need routine leukorrhea test to determine whether they have bacterial vaginosis, trichomonas vaginitis or mycosis vaginitis. If a woman is found to have bacterial vaginosis or trichomonas vaginitis after pregnancy, it may lead to spontaneous abortion and premature rupture of membranes. 3. Cervical Cancer Screening: During pregnancy, cervical cancer screening is usually needed. If precancerous cervical lesions are found, treatment may be needed before pregnancy. 4. Endocrine examination: If a woman during pregnancy has irregular menstruation, it is usually recommended to take blood tests for sex hormone 6 and thyroid function to determine whether there is any endocrine disorder. 5. Eugenics and related laboratory tests: women who are preparing for pregnancy need to check for eugenics. If rubella virus or cytomegalovirus, herpes simplex virus or Toxoplasma gondii infection is found, it should be treated in time to avoid malformation of the fetus or miscarriage. It is also necessary to check the liver and kidney function, coagulation, blood routine to rule out underlying diseases. During the preparation for pregnancy, we should maintain good living habits, quit smoking and drinking, and do the relevant examinations to ensure eugenics.