Abstract: Experiment results of applying borax on cauliflower showed that, to compare with the control treatment of no boron fertilizer, the treatment of applying borax per 667 m² at the dosages of 3.0 kg(45.0 kg/hm²) and 4.5 kg (67.5 kg/hm²) could increase the yield by 216.7 kg (3250.5 kg/hm²) and 333.5 kg (5002.5 kg/hm²) with the increased range 10.7% and 16.5% respectively, and increase the net income by 321.4 yuan (4815 yuan/hm²) and 549.0 yuan (8235 yuan/hm²) respectively.