To provide an earthquake resisting strike for setting free the abnormal resiliency of a door caused by the deformation of a door frame in the case of an earthquake.

The notch 2 of a strike plate 1 is enlarged in width as much as about Y mm from an end edge 2a in a door opening direction, and a breakable bar 4 made of metal is piled up on the strike plate 1 so that, a rear end edge 4a may coincide with an end edge 2b before the enlarging of width, and the parts 5, 5 of the breakable bar 4 are deposited by setting a condition under which they are broken by a fixed shearing force.