Abstract:When the world enters into a new economic era, culture, science and technology integrate with economy and form a ground-breaking industry: Creative Industry. Taking creative industry cluster as the research object and using the related knowledge of organizational ecology, this paper expounds the composition and characteristics of the creative industry cluster ecosystem. Additionally, from the perspective of organizational ecology,this paper summarizes the seven ecological factors that affect the formation of creative industry clusters, and analyzes several mechanisms for the formation of creative industry clusters, including competition mechanism, mutualism mechanism and parasitic mechanism. And the equilibrium condition of each mechanism is analyzed, and the formation mechanism model of creative industry cluster is constructed.On the basis of this, this paper puts forward some suggestions in order to construct suitable ecological environment, pay attention to internal enterprise interaction, maintain the dynamic stability of the cluster ecosystem. The above suggestions provide reference for further promoting the healthy development of creative industry cluster.