High blood fat may affect sexual function. Prolonged high blood fat will lead to hardening of the small blood vessels in the penis, thus leading to a decline in erectile function. Long-term high blood fat will lead to blood viscosity, blood flow slows down, blood vessels appear hardening, the cavernous blood vessels of the penis will also be affected, thus causing a decline in erectile function, erection weakness, insufficient hardness, short duration and so on. In addition, the presence of long-term high blood fat will lead to an imbalance in hormone synthesis and decomposition, and a decrease in androgens will also lead to a decline in male erectile function. Overall, high blood fat patients may affect the sexual function, need to go to the hospital in time to check under the guidance of professional doctors for targeted treatment.