The purpose of this study was to investigate the influences of the network characteristics (degree, degree centrality, betweenness centrality, closeness centrality, and structural hole) of the lifelong education institutes on the organization effectiveness and efficiency in A wide-area regional government. For this purpose, quantitative data were collected from the 526 institutes in A government. The network characteristics were analyzed by Social Network Analysis(SNA). And the relations between the network characteristics and the organization effectiveness/ efficiency were analyzed by multiple regression analyses. The findings were as follows: First, the results showed that structural hole was the most influential variable on organizational effectiveness. Second, degree centrality and betweenness centrality influenced on organizational effectiveness. Third, degree centrality, betweenness centrality, and structural hole had the similar effects on organizational efficiency. On the bases of these findings, suggestions were discussed.