Abstract:HRB500 high-strength reinforced bar, it has advantages of stable material performance, high strength, fine ductility, good welding performance, fine strength-price ratio, good seismic performance, great safety reserve, save steel and so on. This paper introduces the development status of high-strength steel in domestic and foreign, summarizes applied significance of HRB500 high-strength reinforced bar, analyses the problems existed in the promotion process.