Abstract: To investigate the difference between different forms of abamectin on controlling fruit mite,with reference of pesticide－guidelines for the field efficacytrials,the effects of 1.2% abamectin CS、1.8% abamectin WP、1.8% abamectin ME and 1.8% abamectin EC (with the same content of functional component) on controlling Panonychus ulmi Koch and Tetranychus urticae Koch were compared by field trail.The results show: there is no much difference between ME and EC on controlling the target insects in different stage; the quick-acting effects of EC is better than CS and WP.In view of ecology ang economice, micro-emulsion is a new develop direction for the future.