GPa-grade steels are widely applied to the autobody panels to secure the desired strength with substantially low mass, but they are highly sensitive to edge cracking when tention is applied along the sheared edge during stretch flanging process. This paper mainly concens a mold guidleine for blanking process with applying humped shape of mold to enhace the edge stretchability of GPa-grades steels. Since humped shape is mainly focused on piercing process, it essentially required to reveal the effect of humped punch on blanking process to apply mass produce press blanking line. We developed blanking die-set with applying adaptable humped shape, which was utilized for esablishing design gudilines for blanking mold with integrating a function of clearance, blank holding force, width of adaptable mold. The edge stretchability of blanked part is evaluated by various types of experiments such as uniaxial tention, edge bending, stretch bending test.