This thesis is mainly research the application of the queuing model. The theory of this model is applied to the barber service industries. The author carries on the actual statistical survey to the barber shop that it is located in Nan’an District of Chongqing City, The author investigated the customers counts of arriving at the barber shop to 10 minutes for a survey unit and choosed 72 investigative unit data.then the author investigated 113 customers’ service time.The first step, the customer counts that arrive to the barber shop in unit time obedient distribution is carried on the fitting examination. the conclusion is that it obeys the Possion distribution( );then the servicing time of the service system is carries on the distribution fitting examination .the conclusion is the servicing time obedience negative exponent distribution( ); The second step, supposes the barber shop allows the customer waiting .thus establishes the M/M/C queuing model of waiting and FCFS; The third step, according to the formula of the lining up theory calculates the corresponding each lining up target, these formula are the serves intensity ,the probability of system idle, the average waiting customer number in the system, the average stay customer number in the system, the average wait time of the customer, the average residence time of the customer, the probability of system full strength, the probability that the customer must wait for the service when he arrives to the barber shop , and so on. Finally basis each target’s, The barbor shop should employment 4 barbers. This thesis solve the matter of agriculture and industry by mathematic model , it has some demonstrate meaning in applying this model to each industry, and has some inspire effect in application of other queuing model