Taking 3 different colors pest control boards as materials,with tea aphids as object,the control effect of different colors pest control boards on tea aphids in north tea garden was studied.The results showed that all the pest control board had the prevent effects on tea aphids,the yellow board had the best prevent effect,next was green board,the last was blue board and theirs lure effects had the same order with control.The yellow board had the best effects on farm control and lure tea aphids with field efficacy 88.4% and it could kill pest 164.6 per square meters per day,it was optimum in controlling tea aphids in north tea garden.