Abstract: In order to ascertain the effect of different fertilization proportions on oil helianthus and soil nutrients in light sierozem, randomized block design was used in a field experiment including eight treatments such as CK and NPKM with NX440 as the material. The results showed that plant height of inorganic nitrogen omission treatment was inferior to that of other treatments, and the economic yield increase of inorganic nitrogen omission treatment was not significant in comparing with that of CK. Plant height of NPKM treatment increased 41.6 cm compared that of with CK in harvest time, plate grain number increased by 272 grains per plate, 27.7% more than that of CK, thousand kernel weight increased 12.2 g, 23.4% higher than that of CK. Economic yield and biological yield increased significantly by 55.6% and 43.1% compared with that of CK. The nitrogen content of grain and stem of NPKM treatment was 1.6 times and 2.0 times as much as that of CK, respectively. Organic matter content of soil of NPKM treatment increased 1.5 g/kg compared with that of CK. Consequently, in the local condition of light sierozem, no application of inorganic nitrogen was unfeasible, and it was reasonable to refer to NPKM treatment for oil helianthus fertilization.