The invention provides a combined cylindrical barrel near wellbore area shear simulation device. The device comprises a multistage cylindrical barrel consisting of at least two sections of cylindrical barrels which have unequal diameters and are tightly connected; the multistage cylindrical barrel is provided with a sealing cover A and a sealing cover B; the sealing cover A is positioned at the end of the first section of the cylindrical barrel; a sealing pipeline joint a and a sealing pipeline joint b are arranged on the sealing cover A and the sealing cover B respectively; an annulus cylinder which is in interference fit with the first section of the cylindrical barrel is arranged in the first section of the cylindrical barrel; cemented sand is filled between the lower surface of the annulus cylinder and the sealing cover B; and a cylindrical hole which is communicated with the inner cavity of the cylindrical barrel is formed in the cemented sand. The shear simulation device provided by the invention can be widely applied to a process for improving recovery ratio in oilfield chemical displacement.