A new type of pastry slicer which could alter pastry thickness expediently was designed by using SolidWorks and ADAMS. In the first place, the pastry slicer 3D model was established by SolidWorks and imported into ADAMS by the nicer interface between SolidWorks and ADAMS. In the second place, the pastry slicer 3D model was simulated in ADAMS. The dynamics simulation result showed that the pastry slicer could fulfil the anticipative design requirements. The simulation analysis results could be regard as the design reference for the new type of pastry slicer, and the virtual prototype could be used to do a deeper analysis according to different requirements.