To provide a load bearing wall which is reinforced so as to hold the rigidity and bearing force equivalent to those of a load bearing wall without an opening when an opening is formed in the load bearing wall, a member for resisting the horizontal force at the time of an earthquake in a wooden house on site in order to install a duct and others; and a method for producing the same.

In a load bearing wall for wooden house comprising a plurality of erected center pillars and a structural plywood installed between adjoining center pillars, a sheet-like fiber-reinforced plastic material 5 is stuck and fixed to the periphery of an opening 4 installed in the structural plywood.