The first thing you need to pay attention to before the preconception test is: 1. Don’t have sex within a week of the preconception test to avoid affecting the accuracy of the gynecological routine examination and the routine white belt test. 2. Don’t smoke or drink alcohol or stay up late within a week before the preconception test to avoid affecting the results of liver function, kidney function, blood lipid and blood sugar tests. 3. Relax and don’t be overly stressed so as not to affect the endocrine function tests.4. Hold enough urine on the day of the preconception test to facilitate the ultrasound examination. Be fasting in the morning; during the preconception test, pay attention to fully cooperate with the doctor in order to avoid examination errors.