Interface agent for shear wall. Shear wall is a kind of structural wall made of steel bars and concrete. The interfacial agent for shear wall can be used to paint the outer leaves of shear wall, which is mainly used to solve the foaming problem when the shear wall and pouring wall are painted with light plastering gypsum or mortar. The reinforced concrete wallboard is used to replace the beams and columns in the frame structure in the shear wall, which can bear the internal forces caused by various loads and effectively control the horizontal force of the structure. This structure uses reinforced concrete wallboard to bear vertical and horizontal forces.