[Objective] We analyzed the impact of bioturbations on sediment composition, particle size distribution and permeability in order to provide a scientific basis for river pollution control and undercurrent belt repair.[Methods] We investigated the effects of different invertebrates on vertical hydraulic conductivity(VHC) through simulating sediments distrubed by Chironomid larvae, Tubificid and Physa acuta in laboratory conditions.[Results] C. larvae and P. acuta had the greatest impact on permeability. The clogging effect by Tubificid mainly occurred in 3-9 cm under water-sediment interface, resulted in reducing hydraulic conductivity. The granularity effect and distribution characteristics by P. acuta were barely discernible.[Conclusion] Bioturbation of both Chironomid larvae and Physa acuta improves the VHC of sediments, while bioturbation of C. larvae is more remarkable, comparatively. In contrast, Tubificid weakens the permeability of sediment. Bioturbation can modify the structure of sediment deposits, and thereby promote the permeability of streambed sediments.