The main objectives of the studies are: (i) To systematize, deepening the theoretical issues related to efficient state management of credit activity diversification; (ii) To apprise the situation and the results of credit activity diversification; to identify the causes, the weakness in the credit activity of the local commercial banks, especially, to analyse the situation of state manangement in credit activity diversification of the commercial banks and to identify factors affecting the results of state manangement in diversification of credit activity of the commercial banks in HCM City to the year 2020.