The commercial bank of Syria produces various banking services, and its branches trying to gratify its clients, and attracting new clients. It is trying to achieve its clients every time, and to inquire this ideal, it confronts many problems, one of these is overcome jam, that we can find in every branches, and it happened when the serves had not organized. So the serves was not be good, and the client was not be gratifying. In this research, we want to study the kind of expected rate arrival, so we watched rate arrival for the year 2010 in the first branch of the commercial bank of Syria in lattakia city. We expected a relationship between the rate arrival and the time, and find good work planet to organization the work by using queuing theory, we find number of certain servers that to be from 14 to 18 certain to produce service in the shorter time.