The species composition and diversity of terrestrial molluscs in 9 different habitats of Tianmu Mountain in Zhejiang were reported in this paper.Approximately 1 034 specimens were collected,and 33 species and subspecies belonging to 12 families 21 genera were recognized.The result of diversity analysis showed that: the values of species richness indexes d_MA of 9 habitats range from 0.733 to 3.656,species diversity indexes H′ range from 0.779 to 2.409,and evenness indexes J_SW range from 0.562 to 0.909.Based on Jaccard similarity,the clustering dendrogram of 9 habitats was made.The results showed that no significant regularity of species diversity and cluster relationships of terrestrial molluscs among 9 habitats were found.The nine habitats are all near human places at low altitudes.The species composition and diversity of terrestrial molluscs in the 9 habitats are deeply affected by the disturbance of human activities.