Pedestrian protection has been an important issue to get a high NCAP rating and to satisfy enhanced regulation. These days, many advanced industries are striving for a better protection of pedestrians by using an active hood lift system. In this research, the mechanical active hood system is designed to down the hood and a sensor and electrical parts do not used. Hinge and latch can be reversible by spring and locking unit. The result of headform impact test shows a decrease to reduce head injury criteria (HIC). And this system have cost and weight lower than active hood system.