The evidence about how entrepreneurial orientation (EO) affects firms' performance remains inconclusive. This study joins the research by incorporating organizational learning (OL) as a micro-macro link and by extending empirical work to the largely underexplored context of Chinese high-tech industries. Results from a survey of 252 Chinese high-tech firms demonstrate: (1) entrepreneurial orientation is positively related to firm performance; (2) organizational learning is also positively related to firm performance; (3) organizational learning partly mediates the positive impact of entrepreneurial orientation on firm performance; and (4) high-tech companies in the start-up and growth stage are likely to demonstrate stronger linkages in the EO-OL-performance relationship than in mature stage, which shows that the EO-OL-performance relationship is moderated by firms' life cycle.