The　porous　TiC　ceramics　were　prepared　by　the　powder　metallurgy-reaction　sintering　method,　in　which　TiO2,　carbon　black,　phenolic　resin　and　original　TiC　powder　were　used　as　the　raw　materials.　The　results　indicate　that　the　addition　of　original　TiC　powder　can　affect　the　microstructures,　densities,　porosities,　mechanical　properties　and　fracture　behaviors.　With　the　increase　of　the　TiC　addition　content,　the　grain　size　of　secondary　TiC,　the　bulk　density　and　the　pore　size　increase,　meanwhile　the　pore　size　distribution　broadens　and　the　porosity　decreases　gradually.　However,　the　bending　strength　does　not　display　a　trend　of　monotone　variation,　and　the　maximum　bending　strength　reaches　54.97　MPa　when　the　amount　of　TiC　addition　is　30%.　In　addition,　the　fracture　morphologies　of　the　bending　specimens　show　that　the　fracture　of　the　secondary　TiC　grain　is　usually　an　inter　granular　fracture　along　the　grain　boundary.　When　cracks　encounter　the　original　TiC　particles,　three　fracture　ways　may　present,　i.e.　crack　deflection,　inter-granular　fracture　and　trans-granular　cleavage　fracture　of　the　original　TiC　grains.