Field trials were conducted to definite the control effects of thiacloprid 70% WG on Ectropis oblique and Empoasca vitis. The results showed that thiacloprid 70% WG could control Ectropis oblique and Empoasca vitis effectively. At the active ingredient dosages of 75.0-150.0 g/hm2, the control effects of thiacloprid 70% WG on Ectropis oblique and Empoasca vitis were 68.18%-80.23% and 77.09%-90.45%, respectively.