The objectives of this study are to: (1) determine the correlation of entrepreneurial orientation to financing and competitive advantages of MSMEs in North Sumatra, (2) find out the correlation of innovations to financing and competitive advantages of MSMEs in North Sumatra, (3) find out the correlation of financing to competitive advantage of MSMEs in North Sumatra, and (4) find out whether the financing is able to be an intervening variable in the relationship between entrepreneurial orientation and innovation to the competitive advantages of MSMEs in North Sumatra. This study used quantitative descriptive approach. The population in this study were all MSMEs in North Sumatra, while the samples of this study involved 300 respondents to meet the sample criteria which was considered the most fit for maximum likelihood analysis in SEM. Data were processed using structural equation modeling (SEM) techniques using AMOS software. The results of the study show that (1) entrepreneurial orientation had a significantly positive correlation with financing and business competitive advantages, (2) innovation had a significant positive correlation with financing and business competitive advantage ,and (3) financing was able to act as an intervening variable mediating the relationship between entrepreneurial orientation and innovation to the business competitive advantages