New TMCP, which hot ribbed bar is produced with ultra fast cooling technology after rolling, is a creative, applicable technology. There are obviously different on production properties with heat residual quenching technique, which mainly in material’s ductility promotion with the rise of strength. This is necessary and essential for earthquakeresistant ribbed bar and HRB500 ribbed bar production with 20MnSiV or 20MnSiNb. Authors have studied the 6~32mm specimens from 600 thousand ton ribbed bar in a year which tested by construction test department of province. The test contents include chemical composition analysis, metallographic analysis, mechanical properties test, welding test, mechanical connection test, rusteaten comparison, component test and engineering application experiments and so on, the results shows it has good properties. This technology has been applied extensively from 2006 and the yield reached to about 7 million ton annually till now.