Abstract: The purpose is to elucidate the effect of boron on the yield and quality of double low spring rape, and to propose a suitable amount of boron fertilizer for the production of double low spring rape. In 2016-2017, using double-low rape‘Qingza 5’as test material, five boron treatments were conducted and a completely randomized block design was adopted, to investigate the effects of different boron levels on dry matter accumulation, NPK nutrient uptake, yield and quality of double low spring rape. The results showed that under the condition of low boron application in 2016, the dry matter accumulation, nutrient absorption, grain yield and quality of rapeseed plants increased gradually with the increase of boron application amount, and increased and then decreased in 2017 with the increase of boron application rate. The best boron application rate was 22.5 kg/hm2. The grain yield under this treatment was 28.68% higher than that without boron, and the fat content increased by 8.06 percentage points, protein and erucic acid content were reduced to varying degrees compared to other treatments. Regression analysis showed that the appropriate amount of boron (Lili Boron: purity boron ≥ 15%) was 19.96-21.34 kg/hm2 for the higher yield and oil yield in the double-low spring rapeseed production in the dry area of central Inner Mongolia.