Pressure control is the basic of a medical ventilator control,and it is guarantee for medical ventilator working safely and effectively.In this paper,we applied the fuzzy control technology to a ventilator pressure control and evaluated the results on experiment platform.Firstly,we built an experimental platform based on common gas way structure and the pressure control principles for evaluation of control effects.Then some experiments with fuzzy-PID control and traditional PID control were completed separately on the experimental platform,and some parameters such as the overshoot,control error and control time were in-vestageted.The results showed that,fuzzy PID control was more effective in suppression of the overshoot,and reducing the control error,and there was also a certain advantage in controlling time.Fuzzy PID control was superior to conventional PID control.