This paper was aimed to discuss the effects of intercropping aromatic plants on the temporal structures of arthropod community in pear orchard. Intercropping Ocimum basilicum L. (Tr1), Tagetes patula L.(Tr2), Saturela hortensis L.(Tr3) in pear orchard were carried out as three treatments and natural sward (Tr4) and clean tillage (Tr5) as control. Based on optimal partitioning method and cluster analysis, the temporal structures and relation of arthropod general community, pest sub-community and natural enemy sub-community were analyzed systematically in the different intercropping plots. The results showed that the community composition and dominance species composition of the arthropod general community, pest sub-community and natural enemy sub-community were significantly different from each other among different treatments. The individual number of community and dominance species of the arthropod general community, pest sub-community showed a skewed distribution and natural enemy sub-community, however, a normal distribution. The individual number of natural enemy sub-community peaked from late June to mid-July, posterior to that of the arthropod general community and pest sub-community. In most stage of the pear growth, individual numbers of pest sub-community in intercropping aromatic plants treatments decreased from mid-April to last August and those of natural enemy sub-community increased from last April to last June, compared to that of natural sward and clean tillage treatments. The trends were similar to each other in the individual number of arthropod general community and the pest sub-community. In the case of the pest sub-community, the treatments (species used as an intercrop) recorded differences in diversity when the fruits were green and differences in evenness and dominance when the fruits were ripening. The optimization stage of the arthropod general community, pest sub-community in the different treatments of pear orchard were divided into five stages, namely, initial development stage (last March to early April), development stage (mid-April to mid-May), fluctuation stage (last May to early June), stationary stage (mid-June to early August), and decline stage (mid-August to last September), and natural enemy sub-community were divided into three stages, namely, development stage (last March to early June), stationary stage (early June to early September), decline stage (after 20 days in September). But significant difference was observed in time range, quantity and structure characteristics among the different treatments. The clustering distinctness of arthropod general community, pest sub-community and natural enemy sub-community suggested that the individuals, abundance, diversity, dominance and evenness showed discrepancy in arthropod community during different stages among different treatments.