The specific items of the pregnancy preparation examination include gynecological examination, blood test, etc.; the precautions generally include fasting, prohibiting sexual intercourse or vaginal administration of medication three days before the examination, requiring a light diet for the first five days, and men should abstain from smoking and drinking. 1. Specific items: (1) Gynecological examination: mainly palpation, do ultrasound, routine examination of leukorrhea, mycoplasma chlamydia infection, cervical fluid cytology and HPV examination. (2) Blood tests: including sex hormone, blood routine, blood type, fasting blood sugar, hepatitis B two-half pairs, liver function, renal function, nail function, rubella virus, cytomegalovirus, toxoplasmosis, AIDS, syphilis and so on. (3) Others: including routine urine examination, electrocardiogram. 2. Precautions: (1) Fasting: For pregnancy checkups, you need to take blood tests on an empty stomach because you need to do liver function and kidney function tests. So usually after 12 o’clock in the evening the day before the examination, you need to prohibit eating, drinking and so on. (2) Prohibit sexual intercourse three days before the test: avoid sexual intercourse affecting the results of vaginal and cervical secretion test. (3) Prohibit the administration of vaginal medication three days before the test: to avoid the use of medication, which may affect the vaginal environment and lead to inaccurate test results. (4) A light diet is required five days before the test: forbid eating foods such as pig liver and pig blood. (5) Men need to quit smoking and drinking three months before pregnancy preparation.