This study examines the relationships between the network density and network structure holes of the interlocking directorate and the loan interest rate. This study choose Taiwan listed electronics firms over the period of 2009 through 2019 as our research sample. The results of this study show that both network density and structure hole by interlocking directorate are significantly negatively associated with the loan interest rate. Thus, when the connection is closer between the firms, or the bridges between the other firms in the social network will decrease the cost of debt.