Abstract: Insect diversity can reflect the destruction degrees of different geography and natural environment. In order to study the health status of natural environment under different restoration degrees in heavy metal polluted areas, 30 plots from 3 heavy metal polluted areas in Huludao area were investigated for insect diversity. A total of 166 insects were obtained, belonging to 9 orders and 21 families. Orthoptera、Lepidoptera、Coleoptera、Hymenoptera and Hemiptera were found in the three sampled areas. The Simpson dominance concentration index, Shannon-Wiener species diversity index H′, and Homogeneity index J were applied to analyze the insect diversity in the protected area. The results showed that the better the vegetation restoration was, the higher the insect group diversity and biodiversity index were.