The effect of chemical insecticides on the structure and diversity of arthropods in various vegetable fields were studied. The results showed that the effect of chemical insecticides on the arthropods in vegetable fields was reflected from the species structure, the diversity index and the distributive evenness of species. Components of arthropod species fluctuated closely with the insect pests, predatory natural enemies and spiders. Without chemical insecticides in vegetable fields, the index of populatio...