The invention relates to the field of assembling concrete building, in particular to an assembling frame shearing structure curved scissor type combined spline joint structure and an assembling method. The structure comprises a prefabricated bottom layer column or a prefabricated middle layer column, a prefabricated top layer column, a prefabricated wall, a prefabricated middle layer beam, a prefabricated top layer beam, a cast-in-place concrete foundation beam and an H-shaped column-wall connecting key and a groove-type beam-wall connecting key for connecting the components. According to theprefabricated wall and the prefabricated beam, a beam-wall pre-embedded piece is arranged at the joint of the prefabricated wall and the prefabricated beam, the method for connecting the groove-type beam-wall connecting key with the beam-wall pre-embedded piece is adopted, connection of the prefabricated beam and the prefabricated wall is achieved, and connecting portion bent torque and shear force transfer is completed; compared with an existing method for steel bar connection, installation is easier, force transfer is more reliable, the design requirement for strong connection is met more easily, and particularly when an earthquake happens, after the connecting portion deforms, the high bearing capacity still exists, the ductility of the whole structure is better, and the shock resistance is higher.