The　cement-based　grout　material　with　very　high　hour　strength　and　good　self-leveling　ability　was　developed　to　meet　the　needs　of　urgent　engineering　repairing　or　rapid　consolidation　work.　The　grout　material　has　the　properties　of　good　fluidity,　high　hour　strength　and　high　final　strength,　shrinkage　compensating　ability,　short　time　gap　between　initial　setting　and　final　setting　and　better　durability　compared　to　organic　grout　material.　The　influence　of　environment　temperature　on　the　properties　of　the　cement　based　grout　material　was　also　examined　and　discussed.　By　means　of　XRD　analysis,　the　mechanism　of　high　hour　strength　was　discussed.　The　cement　based　grout　material　has　been　successfully　used　in　several　urgent　reinforcing　projects　of　railway　substrate,　as　well　as　some　waterproof　engineering　under　severe　natural　environment.