For selecting the suitable dosage of insecticides to control tomato Botrytis cinerea,taking tomato variety Dongnong 707as material,the field control efficacy of 80% Procymidone WP on tomato Botrytis cinerea was studied.The results showed that 80% Procymidone WP was effective to against tomato Botrytis cinerea,the control effect was 68.5%~89.3%.In production,it is suggested that tomato Botrytis cinerea should be controlled with 80% Procymidone WP 750g·hm-2,with 3~4times of application interval for 7days at the proper control period of disease.