Abstract:The paper builds a micro theory model of high-tech firm's innovation in industry cluster.The data come from questionnaires of 142 software firms in Changchun software industry cluster.The empirical analysis illustrates that tacit knowledge spillover,potential and realized absorptive capacities are positively related to firm's innovation performance;absorptive capacity moderates the relationship between knowledge spillover and firm's innovation performance;industry outside social capital is posit...