Abstract: Studies have shown that the properties of matrix have important effect on the growth of benthic mussels.The aim of the present study was to assess the matrix particle size on growth of Tapes literatus.Matrix with three different particle sizes were used as materials in this study,including the large-size matrix(15 mesh<particle size≤30 mesh),the medium-size matrix(45 mesh<particle size≤60 mesh),and the small-size matrix(80 mesh<particle size≤100 mesh).A total of six treatment groups were set based on the different particle sizes and their combinations:small-size matrix group,medium-size matrix group,large-size matrix group,small and medium-size mixed matrix group,small and large-size mixed matrix group,medium and large-size mixed matrix group.A nine-week-long shell-culture experiment was carried out to evaluate the effects of the six kinds of matrix on growth of Tapes literatus.The results showed that the large-size matrix had the best performance in promoting the growth of Tapes literatus,while the growth of Tapes literatus was barely observed in the dense small-size matrix,indicating that the large-size matrix was suitable for the culture of Tapes literatus.