Due to the complex pore structure of sandstone reservoirs of continental sedimentary type and severe reservoir heterogeneity，the channeling-path formed after long-term water flooding aggravated the plane contradiction，and the recovery efficiency and development effect of oilfields were seriously affected. According to the origin，present situation，technical and economic requirements of channeling-path of sandstone reservoirs，six kinds of plugging agents which accorded with the characteristics of channeling-path of sandstone reservoirs were reviewed from the type of plugging agent，plugging mechanism and performance. The types of six plugging agents mainly included polymer gel，resin，particle，precipitation，microorganism and foam. The plugging agents had their own advantages and disadvantages. So it was necessary to study systematically and comprehensively the sealing method of channeling-path to select suitable plugging agents on the basis of the characteristics of sandstone reservoir.