In the present invention, by connecting the shear walls on both sides only with the slab, the both ends of the slab on the upper part of the opening become plastic hinges when the stiffness is generated, thereby acting as a damper dissipating the energy, while reducing the bottom shear force and conduction moment, Lt; / RTI system. The present invention provides a shear wall slit in-line system comprising: a pair of reinforced concrete coarse shear walls adjacent to each other and having openings formed therebetween; A plurality of slabs integrally joined to the shear wall to divide each layer in a vertical direction; A slit-inward beam provided at an upper portion of the opening, the upper end being integrally coupled to a lower portion of the slab, and both ends being separated from the shear wall; And a plate-shaped slit member provided between both ends of the slit-in-shear beam and the shear wall; Wherein a guide joint is coupled to both sides of the slit member, and both ends of the slab are connected together by the slab, whereby both ends of the slab are fired to dissipate energy.
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