In the clinic encountered a lot of male infertility patients to visit the clinic, when it comes to check semen, once asked the patient a few days without semen discharge, the answer is mixed, there are a lot of patients are from far away, but there is no way to do it, only the next time to do it. Because of the reluctance to do the test is not accurate, there is no reference value. Remember: male fertility physical examination need to do routine analysis of semen, it is best to not discharge semen 3-5 days in advance, and then come to the hospital for examination, and do not drink, do not smoke, do not stay up all night, and do not check semen when you have a cold. In addition, many patients come to the examination, the previous tests are not brought, so that many can not be repeated to do the examination and have to do, their own strain, and spend money. In addition to tell the majority of patients, general semen routine to check 2-3 times in a row to show whether there is a problem, do not just look at the results of a test and chagrin, or take medication indiscriminately.