Abstract: The essay analyses the structure and diversity of the arthropod community in rice field, on the three organize administrative levels of the species, function group and nutrient class, according to systematic investigation and dividing the arthropod community in rice field into three nutrient classes(basal species, intermediate species, top species)and different guilds. Analysis result indicate: the ecological steady of biochemical rice field is the best, and the ecological steady of the natural rice field is better than the chemical rice field’s.