Some　packing　materials　have　been　tested　contrastively　including　different　brackets,　glues　for　fixing　chips,　fluorescent　powder　and　glues　for　mixing　fluorescent　powder,　in　order　to　confirm　their　influence　on　luminous　decay　performance　of　white　LED.　It　is　found　out　from　test　that,　the　efficiency　of　white　LED　using　copper　brackets　is　higher　than　iron　brackets,　moreover,　the　light　decay　is　lower　about　10%.　The　life　of　white　LED　using　silver　glues　is　longer　than　using　epoxy　resins,　but　initial　luminous　flux　is　much　lower　by　1/3.　Different　fluorescent　powders　have　different　influence　on　the　luminous　decay　of　white　LED.　The　life　of　white　LED　using　epoxy　resins　to　mix　fluorescent　powder　is　shorter　than　silica　gel,　but　initial　luminous　flux　is　higher　about　25%.　It　can　be　concluded　that,　different　glues　for　fixing　chips　and　brackets　make　the　thermal　resistance　from　PN　junction　to　bracket　change,　solidified　temperature　is　distinct　during　packing　when　different　glues　for　mixing　fluorescent　powder　have　been　used,　and　fluorescent　powders　have　the　phenomenon　of　luminous　decay,　all　of　those　affect　the　white　LED　life　time.　Therefore,　the　materials　should　be　selected　synthesizing　many　factors　during　designing　and　packing,　based　on　the　importance　of　initial　luminous　flux,　light　decay　and　drift　of　color　temperature.