This paper studied the safety and weed control efficacy of the mixure of pendimethalin with different doses of oxyfluorfen on 8 different scallion cultivars by field trial. Results indicated that 330 g·L^-1 pendimethalin EC 2 250 mL·hm^-2 + 24% oxyfluorfen EC 300-750 mL·hm^-2 was secure to different varieties
of scallion for 3 and 7 days. The herbicide phytotoxicity classification was 1. The sensitivity of different scallion cultivars was different to the mixure of pendimethalin and different doses of oxyfluorfen.‘Zhuangyuanjucong’ and‘ Zhangqiudacong’ were resistant to these herbicides.‘ Yangxingyuancong’ and‘ Lyuxiuyuancong’ were sensitive.‘ Dawutongcongwang’，‘Hangtianyizhangbai’，‘Hanfeng’ and‘ Tiegancongwang’ were moderately sensitive. The controlled effect of 330 g·L^-1 pendimethalin EC 2 250 mL·hm^-2 + 24% oxyfluorfen EC 450-750 mL·hm^-2 on grass were over 80%. They had better control efficiency on main grassy weed and broadleaves in the scallion field.