In the Internet era, pay-for-knowledge is becoming a fait accompli and cultural landscape of knowledge production, dissemination and value realization. “Knowledge” encounters the knowledge limit of the authority symbol derived from the wave of “payment”, the technical limit of artificial intelligence, the market limit dominated by capital and the social limit of seeking certainty, which pose the realistic challenges for online value education. In order to break the logical illusion of pay-for-knowledge and promote online value education, it is necessary to move from pay-for-knowledge to sharing knowledge, realizing socialization of related knowledge, the truth of social knowledge and the value of truth knowledge in practice, establishing the main value educationplatform in time, breaking down the barriers against knowledge sharing, and building a resource sharing platform. Thus online value education should shift from knowledge sharing to value co-existence.