. This research analyzes the influence of specific characteristic of banks (size of the bank, profitability, credit risk, capital and expense management) on the intermediation function of the bank (LDR). The object of research is commercial banks listed on the IDX period 2012-2016 with amount 32 banks. Technical analysis of data used is Panel Regression by using Fixed Effect Model. The result showed that the specific characteristics of the bank (Asset, ROA, NPL, CAR and BOPO) had a simultaneous effect on bank intermediation function with R2 64,98% with significance level α (0,05). The significant variables for intermediation function are CAR and BOPO. While Asset, ROA and NPL variables have no effect.