The　effect　of　squeeze　casting　process　on　the　microstructure　and　properties　of　Al-7Si-0.4Mg-0.3Er　alloy　bracket　was　investigated　by　OM,　SEM　and　microhardness　test.　The　results　show　that　the　solidification　sequence　has　great　influence　on　the　microstructure　of　different　parts　of　the　bracket.　The　size　of　primary　alpha-Al　grains　in　the　first　solidified　thin-wall　is　smaller　than　that　in　the　later　solidified　thick-wall.　The　primary　alpha-Al　phase　in　the　bracket　fabricated　by　low　pouring　temperature　is　smaller　and　more　uniformly　distributed　than　that　fabricated　by　high　pouring　temperature,　but　the　Er-pi-AlFeMgSi　phase　in　the　bracket　fabricated　by　low　pouring　temperature　is　coarse　and　partially　distributed.　The　Er-pi-AlFeMgSi　phase　in　the　bracket　fabricated　by　high　speed　is　smaller　and　more　uniformly　distributed　than　that　fabricated　by　low　speed.　The　microhardness　(HV)　and　standard　deviation　of　the　bracket　fabricated　by　low　pouring　temperature　(650　degrees　C)　and　high　speed　are　1190　and　50　MPa　after　heat　treatment,　respectively.　The　properties　are　more　uniformly　distributed　than　those　of　the　bracket　fabricated　by　low　temperature　and　low　speed.　Al-Si　alloy　engine　bracket　is　suitable　for　forming　at　low　pouring　temperature　and　high　extrusion　speed.