People’s sexual behavior is essentially a psychological phenomenon, in general, if the psychological imbalance between the two sexes, such as fear, tension, worry, anxiety, exasperation, disgust, these will affect the satisfaction of sexual intercourse. Harmonious sex life is by the couple’s emotional state, the accumulation of sexual experience and tacit cooperation to complete the joint. Harmonious sex life must have the following conditions: 1, strong feelings; 2, the two sides of sex is voluntary, equal; 3, healthy body and good mental state; 4, master the law, mutual consideration and cooperation; 5, good at eliminating psychological factors interference; 6, grasp the frequency of sexual intercourse; 7, pay attention to non-verbal communication. In the process of sex, many people are too concerned about the length of time, the deliberate pursuit of extended time, often counterproductive! According to survey analysis, the most appropriate time for sexual intercourse is 3-7 minutes, while people want the ideal time is 7-13 minutes. So not most think of a few minutes, an hour, pompous! Many friends also mind their penis is too short, too small, erection between 7-20cm are normal, do not have a psychological shadow.