After 70 years old, if the penis erection function is normal, generally still have sexual ability. Man 70 years old belongs to the elderly, with the growth of human organs will gradually weaken, hormone levels decline, sexual function will be weakened, but still have the ability to sex. For the physical quality of the 70-year-old man, and the penis erectile function is normal and no other diseases, the penis blood circulation is normal, can still make the penis erectile function is normal. He still has sexual ability and can have a normal sex life. However, in the process of coitus, we should avoid excessive exertion or nervous excitement, so as not to damage the health of the body. For 70-year-old men with poorer health, they may themselves suffer from chronic basic diseases, heart diseases, etc., which may lead to serious consequences after sex, so this group is not recommended to have sex. In addition, it is recommended that in daily life, you need to ensure sufficient rest time, appropriate exercise and exercise to enhance physical fitness, but you need to pay attention to avoid overwork.