[Aims] The herbicidal efficacy and security of four herbicides, mesosulfuron-methyl 30 g/L OF, mesosulfuron-methyl ? Iodosulfuron-methyl-sodium 3.6% WG, fenoxaprop-P-ethyl 69 g/L EC and clodinafop-propargyl 15% WP was studied. [Methods] 4 Herbicides were applied at wheat recovering date and then control effect and injure to wheat were investigated at different stages. [Results] All 4 herbicides can inhibit Alopecurus aequalis at different level. Except clodinafop-propargyl 15% WP, the other three herbicides can injure wheat at higher concentration. [Conclusions] After wheat turns green, clodinafop-propargyl 15% WP can be used to prevent A. Aequalis, the other three herbicides should be payed attention to their concentration in this stage.