This paper is about Improving children pedestrians' head protection performance and cost, weight reduction through the development of active hood latch. by this new mechanism, We can ensure mass production and It is applied to TUCSON. We developed ascending active mechanism. This new mechanism Pop-up and unlock were performed at the same time. It has only one actuator operable structure. As a result, the improvement of the operating speed was reduced by 50% or more size, weight, cost compared to conventional technology. Through this paper a direct connection pop up mechanism, active hood latch development to maximize pedestrian protection performance at very low cost.