This paper introduces the technological improvement of fully continuous rolling, the application of advanced technologies in No.1 small section rolling mill of JIGANG and their effect. The target production and efficiency are quickly reached after reformation. Through the process optimization , the production is greatly increased, the quality is improved obviously and the product rate is further improved. The production of small sections reachs 900,000t in 2004 and 1172, 000t in 2005, and the comprehensive product rate achieves 101.82%.