If a woman has been having sex without contraception for up to 1 year without getting pregnant, she should visit a fertility clinic. If the couple is separated, or if they have sex without contraception for other reasons for less than 1 year, they can continue to try to conceive for up to 1 year. The basic items that need to be checked and the consultation time for female infertility patients: 1. General gynecological examination: all non-menstrual periods can be checked 2. Gynecological ultrasound: all non-menstrual periods can be checked in the Department of Obstetrics and Gynecology, Xijing Hospital, Sli Wei 3. Sex hormone examination (or endocrine): the 2nd-3rd day of menstruation (fasting required); the 21st day of menstruation (or 7 days before menstruation according to the calculation of one’s own menstrual cycle) 4. Fallopian tube function. 3-7 days after menstruation (no intercourse after menstruation) 5. Ovulation detection: generally ultrasound monitoring from day 10 of the menstrual cycle, continuous monitoring until follicle rupture, 1-3 days between each visit 6. Immune antibody test: blood can be drawn at any time (no fasting required) Basic items to be examined and consultation time for male infertility patients: 1. Male physical examination: visit to urology department or male department of reproduction center 2. Semen quality examination: 2-7 days after intercourse or semen emission can be examined. Pay attention to rest the day before the examination and avoid staying up late, smoking and drinking. Generally, 2-3 examinations should be conducted to confirm the diagnosis.