Abstract: The research discusses the mechanism of action of crowdsourcing, which is a new business mode in enterprises from the perspective of competitiveness promotion According to the theory of crowdsourcing and  characteristics of crowdsourcing business mode, application of crowdsourcing mode in three aspects of enterprise R&D, production and marketing is summarized, and model of enterprise competitiveness driven by crowdsourcing is constructed Mechanism of action of crowdsourcing in enterprises is analyzed, and finally, specific suggestions are put forward to promote enterprise competitiveness

Key words: crowdsourcing, crowdsourcing business mode, enterprise competitiveness, virtual organization, value co-creation