The　filling　valve　and　relief　valve　are　core　components　to　ensure　the　rapid　filling　of　fluid　and　the　stable　pressure　unloading　in　the　large　press.　To　further　improve　the　filling　speed　of　the　filling　valve　with　the　function　of　pressure　relief,　a　novel　high-flow　filling　valve　based　on　compound　flow　channels　and　multi-stage　hydraulic　resistance　was　designed.　The　mathematical　model　and　simulation　model　of　the　structure　of　multi-stage　hydraulic　resistance　based　on　AMESim　were　established,　the　influence　rules　of　the　critical　parameters　of　the　annular　hydraulic　resistance　on　pressure　relief　characteristics　were　analyzed.　The　multi-stage　annular　structure　can　achieve　multi-stage　pressure　relief.　The　numerical　analysis　model　of　the　filling　valve　with　detailed　structures　based　on　Fluent　was　built.　The　curves　of　multi-stage　pressure　unloading　based　on　the　pressure　contours　and　velocity　contours　show　that　the　designed　valve　has　good　multi-stage　relief　characteristics,　and　the　filling　rapidity　and　unloading　stability　can　also　be　balanced　well.　Comparing　to　the　traditional　single-channel　filling　valve,　the　valve　with　compound　flow　channels　can　significantly　improve　the　filling　rate　according　to　the　numerical　analysis　in　Fluent.　The　novel　designed　hydraulic　component　for　filling　has　the　function　of　high-flow　filling　and　steady　pressure　unloading.　Therefore,　it　has　good　engineering　application　value.　©　2014　SERSC.