Premarital examination is generally about 700 yuan, including blood and urine routine, liver function, hepatitis B five, three antibodies, chest X-ray, electrocardiogram, ultrasound, etc., depending on the city consumption level slightly different. It is recommended not to do premarital examination because of the cost, generally premarital examination mainly to check whether there are common viral infectious diseases. For families with hereditary diseases can be screened for suitability to have children or boys, both to protect themselves and for eugenics. Note that premarital checkups are separated from marriage as much as possible, so that there is time for treatment if diseases are detected. Women should avoid menstruation, and after 3 days of menstruation in the wedding examination.