From the genetic logic thinking to observe the internal mechanism of “Post-Jin Yong” chivalry fictions innovation，it can be seen that “the way of innovation by resistant mutations” represented by Wen Rui’an，“the way of inheritance by splitting a new path” represented by Huang Yi and “the way of revolution by gradual improvements” represented by Feng Ge in the Mainland New Knight-errant. Besides Jin Yong’s novels,the three kinds of logic thinking mentioned above together formed the efforts of creating classic works. Despite Some imperfection as for the innovative results of “Post-Jin Yong” chivalry fictions，a new understanding about “Post-Jin Yong” and the development process of modern Chinese chivalry fictions can be formed from the perspective of genetic logic thinking.