The new MCPPID control technology is often used to improve the calibrated furnace temperature control. In order to improve the control effect, this paper firstly adopts the PSObased step response test modeling method to model the calibrated furnace temperatureand then uses MCPPID technology to control the model. The realtime control test carried out on the automatic temperature control test device of the tube calibrated furnace shows that the PSObased step response test modeling method is effective.Compared with the traditional ZNPID, the MCPPID control has the advantage of small overshoot. Results show that the PID realtime control program developed on deploytool software is successful.