The important component--- pressure device in die-cutting is analyzed by Solidworks and ANSYS Workbench. With analyzing the structure of the pressure device, some simplification is made, and the tool of draft mirror and feature mirror is often used in building the model in the Solidworks. Loads of the pressure device in different load conditions are analyzed and calculated. Stress and displacement of the pressure device are plotted after static finite element analysis. Its stress is analyzed by ANSYS. Stress and strain distribution is found. Which can provides mechanical simulation for the design of the pressure device, and provides scientific basis for selecting structure type, deciding structural parameters, increasing static and dynamic properties, reducing manufacture cost of the integral body of the pressure device.