This　paper　researches　how　to　improve　sales　quality　system(SQS)　by　adopting　＇Failure　Mode　and　Effects　Analysis＇　and　proposes　these　concrete　techniques.　Based　on　this,　this　paper　then　provides　a　typical　example　of　SQS　in　LY　company　and　states　these　countermeasures　to　improve　SQS.　It　is　helpful　to　determine　reasons　for　SQS　failure　and　to　eliminate　failure　causes　and　to　improve　the　effectiveness　of　sales　quality　system　and　customer　satisfaction　ultimately.