Abstract: To obtain new maize varieties with high yield, drought resistance, lodging resistance and disease resistance, Research Center of Modern Agriculture of Shanxi Academy of Agricultural Sciences combined traditional breeding methods and modern biotechnology to make full use of high-quality American germplasm resources, aiming to improve excellent inbred lines bred by the center. T0725 and T0750 inbred lines were obtained through hybridization and second cycle breeding, associated with molecular assisted resistance identification methods. Then test-cross, variety comparison test and production test in different ecological test sites were conducted to obtain the new maize variety‘Sheng Yu688’which had characters of wide adaptability, good agronomic characters and high yield, and the yield increased by 5% and above compared with that of CK, and had moderate resistance to blight, ear rot and rough dwarf disease. The variety was approved by Shanxi Variety Approval Committee in 2016.‘Sheng Yu688’has high yield, high quality, multi resistance and dense-resistance, with features as follows: the bulk density of 735 g/L, crude protein content of 10%, crude fat content of 3.72%, crude starch content of 72.56%, which indicated that it was a high starch variety; its seed rate is 87.1%, the average yield reaches 11841 kg/hm2. The seed production technology of the variety is simple and convenient, with high yield and reduced production cost.