In this paper a model is presented to explore the relationship between organizational learning, social capital, absorptive capacity and enterprise external knowledge integration capability. Through theory analysis, the research framework was built and structural equation model was constructed. Then an empirical research was carried out based on a sample of 330 Chinese enterprises. Research results proved that organizational learning and absorptive capacity have positive direct effects on enterprise external knowledge integration capability. Meanwhile, organizational learning and social capital has positive effects on absorptive capacity. The result also indicated that social capital does not directly promote enterprise external knowledge integration capability, only by promoting absorptive capacity can enterprises transfer social capital to external knowledge integration capability