A mild increase in LDL in men does not have much effect on pregnancy preparation, but if it increases exponentially and is accompanied by symptoms such as cardiac and pulmonary discomfort, then attention needs to be paid to the fact that it will have a greater impact on pregnancy preparation. If LDL is only mildly elevated, it may be caused by diet, such as excessive intake of red meat and lack of exercise, which requires dietary control and more exercise. If LDL is doubled, the patient may suffer from hyperlipidemia. Although hyperlipidemia has no direct effect on the male genitourinary system, it may lead to serious atherosclerosis, coronary heart disease, diabetes mellitus, and peripheral vascular disease, which will seriously affect the patient’s cardiac and pulmonary functions and lead to a decline in the patient’s exercise capacity. In addition, hyperlipidemia can lead to a hypercoagulable state of the blood, which can somewhat affect the erectile function of the penis, and can also lead to a decline in sperm quality in men. When preparing for pregnancy, men with mildly elevated LDL should engage in appropriate sports to enhance their physical fitness, change their dietary structure, avoid spicy, stimulating and greasy foods, and reduce their weight appropriately. If the LDL is doubled, it is necessary to consult a doctor and use medication such as statins (lovastatin, etc.) under the doctor’s guidance.