Male preconception test precautions are as follows: First, before the test to ensure a regular lifestyle, do not stay up late, sleep normally, exercise, a balanced and healthy diet, try to avoid eating high-fat, high-sugar, high-protein food; Second, stop smoking and drinking 3 days before the test, if you are preparing for pregnancy, you should stop smoking and drinking within 3 months or even 6 months before planning to get pregnant; Third, male preconception test 3-4 days before the test. If you are planning to get pregnant, you should stop smoking and drinking within 3 months or even 6 months before you plan to get pregnant; third, you should not have conjugal life 3-4 days before the preconception test for men.