Abstract  [Objectives]  To evaluate the effects of different insecticide formulations and spray adjuvants on spray droplet drift during aerial application, and provide instructions on aerial, low volume spraying for the control of Diaphorina citri Kuwayama. [Methods]  Two insecticide formulations and three spray adjuvants were tested. The deposition of spray droplets on polyethylene rope at different distances from the spray nozzle was measured at simulated wind speeds of 2 m/s and 4 m/s respectively, in a wind tunnel. [Results]  At a simulated wind speed of 2 m/s, droplet deposition decreased both vertically and horizontally after adding the spray adjuvants Beidatong or Y-20079 at a concentration of 1%, or the adjuvant 806 at a concentration of 0.25%. At a simulated wind speed of 4 m/s, spray droplet deposition decreased both vertically and horizontally after the addition of 1% Y-20079. At simulated wind speeds of both 2 m/s and 4 m/s, low volume aerial spraying of 100 g/L pyriproxyfen EC produced noticeably less vertical and horizontal droplet deposition than 20% thiamide SC. [Conclusion]  Spray drift during low volume aerial spraying is affected by insecticide formulation and can be reduced by adding the adjuvants Beidatong, 806 and Y-20079.