The deficiency of motive power of human capital investment to children in rural China restricts not only the status of human capital of child but also the future status of human capital of rural society.The disparities of development between urban and rural areas and between certain districts, the limited ability of human capital investment of peasant household, the uncertainty of the future returns from their investment to children will reduce their positive attitude to support their children with human capital investment.This study shows that the peasant household’s motive power to human capital investment can be improved effectively through enhancing the utility and expectation of their human capital investment to children.