A stamping connector and its light steel structure stiff frame, wherein, the stamping stiff frame connector is a tabular integral connector formed by steel plate stamping, an upper circular arc gap is provided at the upper edge center position of the tabular integral connector, a lower circular arc gap is provided at lower upper edge center position of the tabular integral connector, the middle position of the left and right edges of the steel plate are in concave, and the concave edges concave flange along the wing edge perpendicular to the plate surface; the front side of the steel plate isdistributed with at least one barmark protruding toward the steel plate frontispiece circular arc from up to down, upper screw holes are open at both sides above the barmark, lower screw holes are open at both sides below the barmark. The connector has features of large load capacity, beautiful appearance, reasonable force, wide scope of application, convenient production and operation, saved material, greatly enhanced building member and the whole load capacity due to the connected light steel structure, so that the building will be more secure and reliable, has wider applicability, can savemore material and can be more economic.