Faster is the mixture of two active chemicals bentazone and rimsulfuron. The mixed herbicide has an obvious effect on postemergence weed control in potato fields, especially on controlling various grass or broadleaf weeds in the potato fields. Compared with the single agent, the herbicide delays weed resistance has a wide herbicidal spectrum and long efficacy duration, and does not harm the potato crop and the after crops on the premise of improving the pesticide effect.