Pre-conception examination includes female ultrasound examination, endocrine examination and gynecological examination. 1. Female ultrasound examination: the female partner needs to check whether the development of reproductive organs is normal through ultrasound, as well as check the follicle development and ovulation, and whether there are infectious diseases or tumors. 2. Endocrine examination: before pregnancy, the endocrine function needs to be checked to see if it is normal, such as sex hormone six, thyroid hormone, adrenocorticotropic hormone and so on. 3. Gynecological examination: gynecological examination is needed to check the development of vulva, vagina and cervix, to observe whether the secretion is normal or not, whether there is any infectious disease, and to check whether there is any human papillomavirus infection and so on. Pre-conception examination also includes male examination, if there is a need to prepare for pregnancy, it is recommended to consult a doctor in time, under the guidance of the doctor for examination.