The　characteristics　of　products　of　microcellular　injection　molding　were　analyzed　by　simulation　in　terms　of　effects　and　emerging　issues　of　the　process　on　the　products.　Moldflow　software　was　used　to　simulate　the　manufacturing　process　of　the　product,　the　computer　cover.　The　factors　contributing　to　the　process　were　simulated　and　analyzed　based　on　previous　studies　along　with　those　on　the　foam　product.　Analysis　show　that　the　impact　of　the　blowing　agent,　shear　stress　and　friction　on　the　bubble　nucleation　exist,　which　play　important　roles　in　injection　molding　process.　The　optimization　for　the　process　parameters　is　offered　to　shorten　the　research　and　development　period.　©　2017,　Beijing　Yanshan　Branch,　Assets　Management　Corporation,　SINOPEC.　All　right　reserved.