Summer sexual demand is relatively strong, the arrival of autumn, people have to spend from the summer heat to the fall, according to the law of change of sexual physiology, sex life should pay attention to. Autumn should be appropriate to reduce the frequency of sex “Huang Di Nei Jing” pointed out that the fall should reduce the desire and activity, to “make the Zhi tranquility, to slow down the punishment of autumn; convergence of the spirit, so that the autumn gas flat; no outside its will, so that the lungs gas clear. This fall should be, the way to raise the harvest also”. That is, the number of demand for a gradual reduction in the number of requirements, due to the golden autumn slump, grass and trees withered, all around the cicada, people should also be God Ningzhi, restrained desire to reduce sexual life, so that the body’s yang qi no longer too much to the outside venting to store the essence of the winter to resist the cold to prepare for the conditions. Therefore, in terms of sexual life, also want to comply with seasonal changes, appropriate to reduce the frequency, to prevent the occurrence of gender diseases. For men, the temperature difference between day and night is large in the fall, easy to get cold, which will affect the prostate function. Because the cold will increase the excitability of the sympathetic nerves, so that the prostate gland gland contraction, glandular ducts and blood vessel dilation, resulting in chronic congestion, aggravated by the stagnation of prostate fluid, resulting in the onset of prostate disease, or make the original prostate disease symptoms worsened. Manifested as frequent urination, urinary urgency, incomplete urination, and abdominal, perineal soreness and discomfort and other symptoms. At this time if the sex life is frequent, will increase the possibility of prostate disease. Some men may experience temporary impotence because of autumn dryness, mainly because of autumn dryness, lack of sexual arousal. Therefore, male sex in the fall should be measured. For women, falling temperatures will reduce the sensitivity of female skin and affect sexual desire. So the fall should be appropriate to reduce the frequency of intercourse, intercourse can be appropriate to extend the time of sexual foreplay, in order to fully stimulate the female libido. The specific frequency of sex varies from person to person, generally 1 to 2 times per month less than the summer, in order not to affect the next day’s energy and life shall prevail.