Static　tests　were　conducted　on　a　two-story　mobile　building　under　wind　loads,　and　the　building　is　composed　of　two　box　units　of　steel　frame　structures.　The　mechanical　behavior　and　the　deformation　performance　of　the　structures　were　investigated.　Based　on　the　principle　of　static　equivalent,　the　horizontal　loads　to　load　points　of　the　top　of　the　columns　were　imposed　to　simulate　the　wind　loads.　The　displacement　values　and　relative　shifting　values　of　the　frame　structures　were　obtained.　The　tests　results　show　that　the　horizontal　deflections　of　the　mobile　buildings　are　greatly　affected　by　the　relative　shifting　of　the　separate　box　units.　And　the　conclusion　also　applies　to　the　container　buildings.　©　(2013)　Trans　Tech　Publications,　Switzerland.