This research aimed to study the structure and operational characteristics of agro-industry and investigate the components of approaches to creating added value of agro-industrial products for sustainable competition, and 3) To develop a structural equation model of approaches to creating added value of agro-industrial products for sustainable competition. The sample group of this research was 300 entrepreneurs or agro-industry business executives registered with the Department of Industrial Works, separated into 150 entrepreneurs from large industries and 150 from medium and small enterprises. The data was collected using questionnaires, analyzed by descriptive statistics, reference statistics, and multiple statistics, and tested the hypothesis using structural equation model analysis with AMOS Advanced Statistical Analysis Program. The finding revealed that the approaches to creating added value for agro-industrial products or sustainable competition included information technology, organization management, innovation management, and market orientation. Regarding the testing result about difference separating with industrial size, it was found that large industries realized the importance of approaches to creating added value of agro-industrial products for sustainable competition more than medium and small industries, with statistically significant at the 0.05 level. From the result of the structural equation model analysis, it was found that there was the probability of chi-square (CMIN-) (0.161), relative chi-square (CMIN/DF) (1.085), the goodness of fit index (GFI) (0.941) and root mean square error of approximation (RMSEA) (0.061). All of the value was consistent with empirical data.