According to banking network has experienced the expanding of private banks and entry of foreign banks, Concentration in the banking network and to measure the degree of competitiveness of banks is important. In this regard, this paper, using the Herfindal and concentration index, measure the degree of concentration in the banking network in the period 1380-1391. Also to measure the degree of competitiveness we use the dynamic Panzar and Ross model in the period 1375-1391. The results of the survey showed that the five largest banks have almost 60 percent of the assets of the banking network in 1391, that this decrease in the period. In addition, five largest banks in 1391, have 51 percent of non non performing loan. It make more Importance of credit risk management in this group of banks. Panzar and Ross dynamic index indicates the competitiveness of large banks are more competitiveness than small banks and private banks are more competitiveness than public banks.