The observed stochastical disturbances occur frequently in temperature control systems composed of plate heat exchanger which is widely used in brewing industry. In reference to this disturbances the heat flow equivalent is widely introduced and the plate heat exchanger temperature computer control system with the real-time disturbance compensation is designed. Hereby the related control parameters are defected on-line and the incompletely differential PID is adopted as control algorithm. The results of computer emulations show clearly that the new designed method can completely compensate the real-time disturbances and has therefore higher applied value in chemical industry and light industry.