Abstract: Dwarfism in oilseed rape is one of the main strategies to improve lodging resistance and be suitable for the mechanized operation. A dwarf mutation bndf-1with plant height of about 75cm discovered from hybrid offspring showed obviously decreased height and increased numbers of primary branches in comparison with the wild type. The mutant also showed other values such as compact construct, strong stem stalk and as well as much more primary branches than the wild type. Genetic analysis on F1 and F2 populations derived from reciprocal crosses between bndf-1 with high-stalk lines 0003 and 0826, respectively, indicated that the dwarfism was controlled by an incomplete dominant gene. In addition, the analysis of F1 yield traits indicated that the dwarfism of bndf-1 has great potential to be used in breeding.