In　Structural　Engineering　Experiment　Grid　(SEE-Grid),　there　are　huge　amounts　of　heterogeneous　data　distributed　in　different　experimental　sites.　This　paper　summarizes　a　conceptual　model　of　the　experimental　data,　and　based　on　this　conceptual　model,　Structural　Engineering　Experimental　Data　Management　Framework　(SEEDMF)　is　proposed　to　manage　the　structured　data　and　unstructured.　In　addition,　the　heterogeneity　of　structured　data,　which　can　be　overcome　by　SEEDMF,　is　discussed　in　detail.　Finally,　the　portal　of　Engineering　Experimental　Data　Management　System　(SEEDMS)　which　is　a　part　of　SEE-Grid　is　demonstrated.　©　2010　IEEE.