In　order　to　determine　validity　and　applicability　of　numerical　simulation　of　mesoscopic　tensile　fracture　process　of　concrete　using　the　cohesive　elements,　based　on　the　cohesive　crack　model　theory,　by　embedding　cohesive　interface　elements　inside　solid　finite　element　meshes,　two-graded　concrete　specimen　of　Dongjiang　arch　dam　were　numerically　simulated　under　uniaxial　tension.　The　number　of　aggregates　according　to　the　aggregate　content　and　average　diameter　of　aggregate　for　one　grading　were　calculated,　the　Monte　Carlo　method　was　used　to　generate　the　random　aggregate　model.　The　effects　of　mesh　density　of　the　cohesive　element,　aggregate　distribution　and　fracture　parameter　used　for　aggregate-mortar　interface　elements　on　the　damage　mode　and　macro　mechanical　properties　were　investigated.　The　results　indicate　that　it　is　an　efficient　method　to　simulate　the　fracture　process　of　concrete　materials　with　the　zero-thickness　cohesive　elements　and　macro-mechanical　properties.