A　combined　supercritical　and　subcritical　process　for　pretreatment　and　hydrolysis　of　lignocellulosic　waste　has　been　proposed.　Batch　experiments　and　kinetic　analysis　were　performed　to　investigate　the　secondary　hydrolysis　of　cellulose　in　subcritical　water　as　well　as　the　feasibility　of　combining　the　whole　process.　A　60　mg　amount　of　microcrystalline　cellulose　and　2.5　mL　of　deionized　water　were　mixed　in　each　reactor　and　reacted　at　380　degrees　C　and　16　s　as　the　primary　hydrolysis,　followed　by　different　subcritical　conditions　for　secondary　hydrolysis.　The　products　were　analyzed　by　HPLC,　which　showed　that　the　primary　hydrolysis　produced　28.1%　oligosaccharides　and　26.3%　hexoses.　For　the　secondary　hydrolysis　in　subcritical　reactions,　the　highest　yield　of　hexoses,　obtained　at　280　degrees　C　and　44　s,　was　39.5%.　At　lower　temperatures,　higher　maximum　yield　of　hexoses　was　obtained,　but　the　reaction　times　were　longer.　Kinetic　analysis　showed　smaller　reaction　rate　constants　for　hexoses　decomposition　compared　to　those　for　oligosaccharides　hydrolysis,　and　the　difference　between　these　increased　with　the　decreasing　reaction　temperature.　This　explains　the　observed　hexose　accumulations　in　the　subcritical　reaction　and　indicates　the　feasibility　and　advantage　of　combined　supercritical　and　subcritical　processes　for　biomass　conversion.