When it comes to traditional methods,the results tend to be inefficient,imprecise and fallible when calculating the pressure center of some complicated moulds.Therefore,in this passage,a procedural solution based on the platform of AutoCAD is introduced in the procedure of moulds design,which,at the same time,has the ability to control errors.Its theoretical basis and procedural calculation and also given.Finally,from an example which compares pressure center value of this new method and that of traditi...