The loading and unloading manipulator used in the pressing machines of components assembly production line of some brand automobiles was introduced. Its main functions were to realize loading, unloading and transmitting automatically between the two pressing machines and the components automatic conveying line, ensure the component was accurately located and could load and unload components with different types in order to achieve the production line processing various kinds of components. The functions and working cycle of the manipulator were expounded, and the main structures and characteristics of the arms, hand, and power cylinder with buffering piston of needle-valve type were introduced. The accuracy of the gripping and transmitting of the manipulator is high, and its production efficiency has been improved greatly.