The weeding effects of several herbicides were tested and compared. The results showed that, 45 days after herbicide application, the fresh weight control effect of Congfeng 200 mL/667 m² treatment （T4） and Congfeng 160 mL/667 m² treatment （T3） were 99.99% and 99.29%, respectively. The yield of T3 treatment was 640.31 kg/667 m², which was 29.12 kg/667 m² higher than the conventional control （apply Qiuzhibao 125 mL and Xicaojing 80 mL every 667 m² at 5~7 days before machine transplanting seedling, apply Maxiete 125 mL and Xicaojing 50 mL at 15 d after machine transplanting seedling）. The benefit of T3 treatment is 32.51 yuan/667 m² higher than the conventional control, and the other treatments are lower than the conventional control. The brown rice rate and whole rice rate of T3 treatment were 83.3% and 76.2%, respectively. Among them, the whole rice rate was 1.0 percentage point higher than the conventional control.