To understand academic research, bibliometric analysis is tremendously important at any aspects. Research institutions such as university, institution and research center, are focal point of academic research. We have used simple and quantitative bibliometric analysis for the evaluation of research institutions. Nowadays some study show qualitative and network-based bibliometric analysis has been implemented for this purpose as a new approach. As such a new approach, this research shows network-based bibliometric analysis to understand research institutions characteristics qualitatively and show new standard for the evaluation of research institutions, using co-authorship analysis. As a result and discussion, we suggested some network index may represent their institutions' academic situation and power on their field and country.