The　resourcilization　technologies　of　stalks,　typically　as　ethanol　production　technology,　have　caught　much　attention　due　to　its　feasibility　and　valuable　production.　Pretreatment　and　hydrolyzation　are　the　key　processes　of　ethanol　production　from　stalks,　and　multifarious　chemical　and　biological　technologies　have　been　developed　for　stalks　conversion.　Supercritical/　subcritical　technology　demonstrate　obvious　advantages　over　traditional　ways,　such　as　much　higher　reaction　rate,　not　requiring　additional　catalyst,　and　no　inhibitory　reaction　of　products.　Progress　in　research　and　development　of　supercritical/subcritical　technology　for　pretreatment　and　hydrolyzation　is　reviewed　in　this　paper,　especially　the　principle,　process　and　interrelated　research　of　combined　supercritical/subcritical　technology,　which　includes　the　primary　treatment　in　supercritical　water　for　separating　the　polymeric　components　and　hydrolyzing　of　cellulose　to　oligosaccharides,　and　the　secondary　treatment　in　subcritical　water　for　hydrolyzing　of　oligosaccharides　to　glucose.　Additional　information　on　the　research　of　hydrothermal　treatment　is　also　provided.　Furthermore,　the　prospect　of　research　and　application　of　supercritical/　subcritical　technology　is　discussed.