People begins to call the sexual behavior outside marriageconnect , and be opposite this kindmake divisionsevere punishment of inflict of male and female. Come nearly 20 years however, “The sexual behavior outside marriagebecome again touch a Chinese sensitive nerval term, and was affixed by a few peoplehuman nature,free,the rightwait for beautiful label. To the reason of the sexual behavior outside extramarital love or marriage, each viewpoint of honest learned man is differ, author apt thinks the sexual behavior outside marriage is the following kinds of elements the result of joint action. Chinese heart loses what the blame feels to be short of break a place of strategic importance of library of American scholar Ma Er to think, civilized progress and the buildup of the feeling that suffer a pain are concerned, he puts forwardlose happily what increase and bring about what the price that civilized progress place pays feels by negative blame namely. However, this one theory appears in China not so held water, a lot of Chinese won’t produce the move that suffer a pain basically to his behavior.