Abstract: Integrating the current research orientation in social network, the negative effects of two levels—software park and interfirm—entrepreneurial networks on the firms’innovation are analyzed. The results of 190 software firms sampled from five national software parks in China being studied show that the moderating effects of park’s entrepreneurial network characteristics are differentiating, some of which exert negative effects on innovation. Centralizationcharacteristics of park’s entrepreneurial network negatively moderate the effects of firm’s entrepreneurial network on firm’s innovation, and cliquescharacteristics positively moderate the effects of firm’s position as structure hole on innovation, but negatively moderate the effects of firm’s centrality status on innovation.