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Undoubtedly banks in our economy like other countries considered as one of the most important go between financial institutions that assist governments in It’s accomplishment of the strategies and policies. In the economy classification, these financial institutions considered as service sector which have direct relation with manpower and customers, in other word, customer and manpower whether in the form of receiving or giving services are the crucial factors for the survival of an institution, thus improving the system of providing services from the banks can help the banks to gain many advantages in today's competitive environment , through the reducing the expenses and attracting the satisfaction of customers. The plan “staff - cashier” is one of the project that is planed to honor and attract the satisfaction of customers, so removing It’s short falls , We can pave the way towards customer orientation and bring about a successful banking system, with the help of techniques and queuing system . In this research the writer with the help of tries to asses the functions of “staff - cashier” system considering different parameters and measures such as time, density of customer and productivity and compare it to the previous system. to this end, a brief theoretical and methodological introductory has been provided and by virtue of theoretical basis some actions have been taken towards the process of data , by applying statistical techniques and models in the queuing theory and after matching information and data, we can analyses the “staffcashier” system.