According to the field trail on the safety of Fomesafen and the mixed herbicide to the soybean and the control effect to broad leaf weed in soybean field, the usage of Fomesafen 1.0L/hm2+ 1.0L/hm2 and Fomesafen 0.75 L/hm2+ Bentazone 1.5L/hm2 provide the best control. It not only expand the weed control range but also improve the safety standard to the soybean. The study provided evidence to control the broad leaf weed more efficiently in the soybean field.