The three-dimensional modeling software Pro / E is applied to conduct parametric solid modeling on the screw rotor and stator, and the movement trajectory as well as forces borne in the sealed fluid chamber and the rotor cavity under pressure are analyzed. 利用三维建模软件Pro/E对螺杆泵转子和定子进行参数化实体建模,在压力作用下分析了密封腔和转子内腔流体的运动规律和受力。