A　meso-scale　numerical　analysis　model　of　concrete　which　studies　the　dynamic　compression　damage　behavior　and　the　strain　rate　effect　at　elevated　temperature　was　established,　which　is　combined　with　the　meso-scale　heterogeneity　of　concrete　and　considers　the　mechanical　property　degradation　effect　and　the　strain　rate　effect　of　micro-components　at　elevated　temperature.　In　this　approach,　the　heat　conduction　behavior　was　simulated　initially,　then　the　＇result　output＇　was　used　as　＇initial　conditions＇,　and　the　dynamic　compressive　behavior　of　concrete　was　conducted.　The　good　agreement　between　the　numerical　simulation　results　and　the　experimental　results　indicates　the　feasibility　and　the　reasonableness　of　the　presented　meso-scale　approach.　Subsequently,　the　dynamic　uniaxial　compression　damage　behavior　and　failure　mechanism　on　the　meso-scale　of　concrete　at　elevated　temperature　were　studied.　The　influence　regularity　of　high　temperature　on　the　dynamic　compressive　strength　increase　coefficient　(CDIF)　was　revealed.　The　results　indicate　that　the　damage　of　concrete　concentrates　on　the　loading　terminal　with　weak　mechanical　properties　at　elevated　temperature.　Furthermore,　the　temperature　degradation　effect　on　mechanical　properties　of　concrete　(such　as　strength　and　secant　modulus)　is　more　significant　compared　with　the　strain　rate　effect.　©　2019,　Engineering　Mechanics　Press.　All　right　reserved.