Abstract: In order to solve shallow topsoil, bad condition of soil physical properties and roots’ growth in wheat field due to years of rotary tillage, based on balanced fertilization and the application of national invention patent product produced by Woli agricultural technology service co., LTD in Shanqiu, we carried out the study by doing field experiments and soil analysis. After application of root promoter, soil bulk density of arable layer decreased obviously, soil became looser, soil porosity increased, permeability and soil moisture content were improved, wheat root growth environment was also improved, the root dry weight increased, and the three factors were coordinated effectively. The average number of spike increased to 635000 spike per hm², spike grain number increased by 1.8 and thousand seed weight increased by 1.7 g. There was a curve regression relationship between wheat yield (y) and content of root promoter (x) and its effect equation was: y=8670.4257 128.6471x-3.0432x², F_treatment=152.43^**＞F_0.01=5.64；F_repeat=3.73＜F_0.05=4.10. In terms of the comprehensive effect on improving the soil quality and increasing productivity, the suitable dosage of root promoter was 15-22.5 kg/hm², it could be applied to rotary tillage wheat fields under current productive, ecological and technological conditions in the eastern Henan plain.