The　erosion　resistance　of　two　kinds　of　remolded　pure　cohesive　soils　as　well　as　cohesive/non-cohesive　mixtures　with　20%,　40%,　60%　non-cohesive　fraction　respectively　was　tested　in　Erosion　Function　Apparatus.　The　influences　of　cohesion,　dry　density,　non-cohesive　soil　particle　size　and　mass　content　on　the　critical　shear　stress　of　soils　were　investigated.　The　results　obtained　show　that　the　critical　shear　stress　of　pure　cohesive　soils　has　a　linear　relation　to　cohesion,　but　for　different　kinds　of　cohesive　soils　the　coefficients　are　much　different.　Compared　to　cohesion,　the　relationship　between　dry　density　of　2　pure　cohesive　soils　and　critical　shear　stress　can　be　determined　by　an　exponential　function.　For　mixtures,　the　critical　shear　stress　is　mainly　related　to　cohesion,　however,　non-cohesive　soil　particle　size　and　mass　content　can　affect　critical　shear　stress　as　well.　When　the　particle　size　of　non-cohesive　soil　is　determined,　with　the　increase　of　non-cohesive　soil　content,　the　threshold　exhibits　an　increase　at　first　and　then　a　decrease.　Nevertheless,　as　non-cohesive　soil　content　is　constant,　with　the　increase　of　non-cohesive　soil　particle　size,　the　threshold　in-creases.　A　critical　shear　stress　model　of　remolded　soils　is　proposed,　which　can　provide　a　proper　prediction　of　critical　shear　stress　of　cohesive/non-cohesive　mixtures.　©　2018,　China　Water　Power　Press.　All　right　reserved.