A manufacturing method of a vibration damping bushing wherein an outer cylindrical member arranged on an outer peripheral side of an inner axial member is provided with on its both axial sides a pair of first inclined cylindrical parts each having a diameter gradually reduced toward an axial outside and a pair of second inclined cylindrical parts each extending further toward the axial outside from an axial end of the corresponding first inclined cylindrical part with an inclination angle smaller than that of the first inclined cylindrical part. The outer cylindrical member is arranged on the outer peripheral side of the inner axial member to be connected thereto by a main rubber elastic body. Axial ends of the main rubber elastic body are deformed by increasing the inclination angle of the second inclined cylindrical parts of the outer cylindrical member through a drawing operation.