An important intermediate in the synthesis of benzoylurea insecticides, it is used to synthesize the next intermediate, 2, 6-difluoroacyl isocyanate, and finally to obtain the pesticide varieties such as fluboluron, difluoruron, fluridine urea, loupirea, etc. 2, 6-difluorobenzamide can also be directly used in the synthesis of fluboluron and fluboluron