Previous studies explicitly or implicitly concluded that there were many factors impacting on University Spin-offs'(USO) performance, but there is little empirical evidence for linkages among USOs' network embeddedness and performance based on entrepreneurial orientations perspective. Did Entrepreneurial Orientation (EO) make China USOs' performance difference after embedding into industrial network? Based on the survey data of China University Spin-offs (USO), the empirical results suggested that the embeddedness at the firm level does significantly affect China university spin-offs' performance, but it is partly mediated by the sub-dimensions of Entrepreneurial Orientation (EO).Implications for both research and practice are discussed herein.