In　order　to　offer　some　meaningful　information　on　prediction　of　East　Asian　summer　monsoon　and　ENSO,　this　paper　mainly　calculates　the　relativity　between　the　East　Asian　summer　monsoon　and　tropical　upper　sea　temperature　and　makes　a　composite　analysis　to　discuss　the　interactions　of　them.　It　turns　out　that:　The　best　correlation　between　the　Tropical　Central　Indian　Ocean,　the　West　Pacific　Ocean　to　the　East　Indian　Ocean　and　EASM　index　is　at　120m.　The　positive　and　negative　correlation　zones　move　from　west　to　east　over　time　from　the　Pacific　Ocean　to　the　Indian　Ocean　in　the　tropics.　If　the　sea　temperature　field　in　autumn　and　winter　in　the　previous　year　shows　the　phenomenon　of　La　Nina-like,　the　west　wind　from　the　East　Indian　Ocean　to　the　West　Pacific　Ocean　will　strengthen　from　December　to　April.　From　March　to　April,　there　would　be　easterly　wind　anomaly　air　current　on　the　East　Pacific　Ocean,　and　if　Walker　Circulation　strengthens,　it　may　occur　strong　monsoon　in　summer,　and　is　easy　to　turn　into　the　phenomenon　of　El　Nino-like　in　autumn　and　winter.　About　their　interactional　physical　process,　should　further　strengthen　the　mechanism　and　model　study　in　the　future.