【Objective】 Soil aggregates, as basic units of the soil in structure, are of huge influence for water penetration and retention in soil, topsoil erosion and plant growth. Their stability is one of the main indicators in evaluation of soil anti-erodibility. Arbuscular mycorrhizal fungi (AMF) may adjust soil structure via influencing formation of soil macro-aggregates and stability of water-stable aggregates. To explore the effects and potential mechanisms of arbuscular mycorrhizal fungi (AMF) affecting formation and stability of soil aggregates in rhizosphere of mulberry, a pot experiment was carried out.【Method】In the experiment, mulberry trees were planted in the pots and the soil in the pots was inoculated with Funneliformis mosseae (F. mosseae) and Rhizophagus intraradices (R. intraradices), separately. After a certain period of cultivation, the soils in the pots were collected with the shaking off method, and separated into three aggregate fractions by particule size (0.25~5 mm，0.053~0.25 mm and <0.053 mm）using the dry and wet sieving method for analysis of composition and stability of soil aggregates, glomalin related soil protein (GRSP) and soil organic carbon (SOC) in the rhizosphere of mulberry to evaluate effects of the inoculation.【Result】 Results show that R. intraradices-inoculation expanded the fraction of macro-aggregates significantly in proportion, and increased mean weight diameter (MWD) and geometric mean diameter (GMD) of the aggregates and deceased their destruction rate (PAD), as compared to the control. Interestingly, F. mosseae-inoculation did not have much the effects. However, both F. mosseae- and R. intraradices-inoculations increased the content of SOC in micro-aggregates significantly. In addition, F. mosseae-inoculation reduced total GRSP (T-GRSP) significantly in macro aggregates, while R. intraradices-inoculatioin increased the content of T-GRSP and easily-extracted GRSP (EE-GRSP) significantly in both macro- and micro-aggregates. Inoculation of AMF had certain negative effects on overall SOC, of which T-GRSP accounted for 25.5%~76.5% and EE-GRSP did for 4.87%~5.93%, and the effects were more significant in R. intraradices-inoculted soils than in F. mosseae-inoculated ones. Moreover, the composition of soil aggregates was significantly and positively related to soil T-GRSP, EE-GRSP and SOC. Among them EE-GRSP was the main driving factor, and T-GRSP was the key factor affecting soil aggregate stability. 【Conclusion】 In short, all the findings suggest that AMF can significantly improve the composition and stability of soil aggregates in the rhizosphere of mulberry. R. intraradices was more effective than F. mosseae. The formation of soil aggregate depends mainly on EE-GRSP, while their stability is subject mainly to the influence of T-GRSP.