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This paper introduces a development of pedestrian protection analyzing technologies and its practical application to an actual automobile. The analyzing technologies have two types, an analyzing tool for initial design stage utilizing Microsoft Excel and a crash analyzing software MADYMO, and a large scale FEM (Finite Element Method) utilizing a crash analyzing software PAM-CRASH. These technologies were applied to an actual car development to study the efficient structure. In this paper, a development of a bumper structure with high leg protection performance is reported. The developed bumper was tested and evaluated on an actual vehicle and was proven to have high leg protection performance. The leg protection analyzing technology could estimate the leg injury of a actual vehicle test within 10% prediction error.