Atthepresenttime,togetherwiththedevelopmentofthedigitalcontroltechnologyinvariousindustries,thefuelinjectionprocessofmarinedieselengineequippedwiththeelectroniccommonrail(CR)systemwhichcreatessignificantimpacttotheenvironmenthasbeenresearchedbynumerousengine manufacturers such asCaterpillar,MTU,Cummins, Man,etc. In thispaper,authorsaregoingtoresearchthoroughandanalysetheadvantagesaswellasthedisadvantagesofthevariouselectroniccommonrailsystemswhichhasbeendevelopedformarinedieselengine.Inaccordancetotheresultofthisresearch,authorsaregoingtoanalyseanddelivercommentariesaswellassummarizethe commoncharacteristics of marine dieselengine commonrailsystemwhich has beendeveloped, inordertogiveoutsuggestionsofremarksandnoticesfortheexploitation,maintenanceandrepairprocessesofthesesuchsystems.