Preconception check-ups are vital for couples planning a pregnancy, not only to help assess the health of both partners but also to detect and treat potential health problems early. Women should pay attention to their ovulation period, maintain good living habits, avoid smoking and alcohol, and undergo necessary gynecological examinations. Men should also quit smoking and drinking, maintain a healthy diet and exercise appropriately to provide high-quality sperm. Through pre-pregnancy check-ups, couples can lay a solid foundation for pregnancy and the health of their future baby.