XML　has　become　the　de　facto　standard　for　representing　and　interchanging　information　in　web-based　applications.　And　conceptual　modeling　approaches,　such　as　EER　and　UML,　have　been　widely　applied　to　illustrating　data　structure　and　relationships　in　traditional　database.　However,　there　is　no　standard　methodology　for　designing　XML　data　at　conceptual　leveI.　In　this　paper,　we　give　a　survey　to　conceptual　modeling　for　XML　in　terms　of　the　basic　models　they　employ.　Most　of　them　are　based　on　well-established　conceptual　models.　Some　novel　conceptual　models　are　proposed　to　capture　the　hierarchical　structure　of　XML.　A　set　of　requirements　for　a　good　conceptual　models　for　XML　are　concluded.　In　particular,　we　emphasize　the　two　phases　modeling　methodology　and　the　importance　of　data　semantics.