This paper uses qualitative methods to explore the evolution of fertility concept of rural youth and its action logic under the background of low fertility rate, focusing on the phenomenon of “Escape” when the birth policy is tightened, which is a direct classification of the phenomenon of “Don’t want to have a child” when the birth policy is returned to the family and individual, thus presents the birth concept in the action level of direct outreach. Through deep excavation of its evolution and its deductive logic, it appears as the tension between family and individualism and the conflict between family and new family. In other words, when the family doctrine is dominant and the social attention to gender is high, it is the basic pattern of “Escape”. When the individualism is dominant and the social attention to gender is low, is the “Do not want to live” basic form. It can be seen from this that the essential factor of the change of the fertility concept of the rural youth lies in the inherent uniqueness of the youth group, which exists in the transformation from the family doctrine to the individualism and from the family doctrine to the new family doctrine, and further expressed for its changing society and external culture of the internalization and appearance.