Dewey is a famous educationalist, and thus takes a prodigious place in the history of the world education. The most noteworthy fascination of his educational theory covers: the basis of human ideology of the interaction in relation to environment; the purpose of the ideology of children's emancipation; the strong emphasis on practice and his masterstroke on the specialization of instruction. But Dewey's theory also shows some demerits such as lacking of the insight of education of comprehensive technology owing to the thought of pure manual labor; its denial of the teaching materials compiled according to the logic order. Therefore the writer of the paper argues that the theory of Dewey should apply to practice in modern era, its shortcomings overcome, which is supposed to be the responsibility of the educators in theoretical or teaching researches.