Flexible Printed Circuit Board (FPCB) will have more and more requirements in the future. It¡¦s very important to quickly product it. For punch the FPCB with high quality and high speed, we will analysis the geometric of the punch mechanism. And synthesis the mechanism with new dimensions. And then, design many kinds of motion curves of motor to compare their characters. Finally, we will find it¡¦s works to design motion curves for FPCB punch mechanism to improve the punch quality.