Based on the analysis of the trend of future labor supply in China，this article argues that，during the relieving of labor supply pressure，families get more easily to concentrate funds on children’s education，because of the current low birth-rate caused by Family Planning. Together with university enrollment expansion，this becomes the channel to get labor supply separated besides improving population quality. Furthermore，this process accelerates the labor transmission from the primary industry to both secondary and tertiary industry，from state-owned unit to non-state-owned unit，as well as from middle-west area to east area. During this transmission，the labor market will require more professional skilled labor than university graduates and the latter will face a short of elasticity demand. This structural unemployment will last for a long time if the growth of university graduates is faster than that of social transformation and industrial upgrading.