Generally the elderly in the case of physical fitness allows 2-3 times a month to have sex is appropriate. Usually, if the process of sex is physically and mentally happy, no discomfort, and the next day after sex is relaxed, full of energy, even into old age, can maintain sex, it is recommended that 2-3 times a month is appropriate. If you feel very tired after sex, dizziness, lack of concentration, palpitations, back pain, etc., suggest that there is the possibility of excessive sex, should be appropriate to reduce the number of sex, pay attention to rest. In addition, the elderly may exist hypertension, hyperlipidemia, coronary heart disease, pulmonary heart disease, diabetes and other diseases, and these diseases have a certain impact on sexual function. Therefore, the elderly should consider their personal physical condition when having sex to avoid inducing diseases and prevent cardiovascular and cerebrovascular diseases. Because of the relatively low resistance of the elderly, the risk of infection will increase accordingly. It is recommended to pay attention to the hygiene of sexual life and wash the genitals properly before and after sex to avoid causing infection.