Textile　reinforced　mortar　(TRM)　strengthening　can　improve　the　anti-aging　performance　of　reinforced　concrete　(RC)　slabs,　and　significantly　improve　the　rust　problem　of　steel　plates　and　bending　performance　of　RC　slabs.　To　study　the　effect　of　TRM　on　the　flexural　capacity　of　two-way　RC　slab,　four　sided　simply　supported　bending　tests　were　conducted　on　two　TRM　strengthened　concrete　slabs　and　an　unstrengthened　control　slab.　And　the　effects　of　different　strengthening　techniques　on　the　flexural　capacity　and　bending　deformation　capacity　of　the　two-way　RC　slabs　were　investigated.　It　was　concluded　that　the　application　of　TRM　to　strengthen　the　two-way　RC　slabs　can　effectively　improve　its　bending　bearing　capacity　and　bending　deformation　capacity.　Compared　with　the　unstrengthened　control　slab,　the　bending　bearing　capacity　of　the　two　strengthened　slabs　increased　by　54.2%　and　43.8%,　respectively,　and　the　energy　absorption　value　increased　by　75.5%　and　49.1%,　respectively.　In　addition,　compared　with　control　slab,　the　post-cracking　stiffness　of　TRM　reinforced　slabs　treated　with　and　without　interface　agents　increased　by　145.2%　and　83.4%,　respectively.　This　indicated　that　using　interface　agents　for　interface　treatment　could　improve　the　adhesion　between　the　TRM　and　the　original　RC　slab,　thereby　preventing　the　initiation　and　development　of　cracks　between　the　new　and　old　interfaces.　The　strength　utilization　rate　of　textile　was　proposed,　and　the　relationship　between　strength　utilization　rate　of　textile　and　maximum　or　minimum　distribution　network　rate　was　analyzed.　Based　on　the　plastic　hinge　theory　a　simple　calculation　formula　for　the　bending　bearing　capacity　of　the　two-way　RC　slab　strengthened　with　TRM　was　proposed,　which　provided　the　reference　for　the　application　of　TRM　for　strengthening　projects.　©　2023,　Korean　Society　of　Civil　Engineers.