This　paper　uses　stress-strain　relationship　of　concrete　proposed　by　European　Code　(CEB-FIP1990)　and　GB　50010-2002　Code　for　Design　of　Concrete　Structures　to　describe　the　static　deformation　characteristic　of　cement　mortar　material,　and　uses　the　authors＇　experimental　results　to　analyze　a　law　of　choosing　model　parameters.　Research　shows　that　the　stress-strain　relationship　proposed　two　codes　can　satisfactorily　reflect　the　deformation　characteristic　of　cement　mortar　materials　by　changing　the　values　of　material　parameters.　Base　on　stress-strain　relationship　of　cement　mortar　materials,　the　author　introduces　the　uniaxial　dynamic　strength　criterion　to　gain　the　uniaxial　dynamic　stress-strain　relationship.　It　shows　that　the　dynamic　stress-strain　relationship　proposed　this　paper　can　satisfactorily　describe　uniaxial　dynamic　mechanical　characteristic　of　cement　mortar　materials　by　verifying　dynamic　experimental　results　of　cement　mortar　material　given　by　the　literature.