The application relates to the technical field of building plugging materials, and particularly provides a long-operable-time plugging material, which is prepared from the following raw materials in terms of total weight: 0.02-3% of a
retarder, 0.005-2% of a
calcium salt, 0.001-1% of a
cellulose ether and
cement supplementing to 100%. By optimizing the types of the
retarder, the
calcium salt and the
cellulose ether and by stipulating the relative amounts of the
retarder, the
calcium salt and the
cellulose ether, the quick-setting type plugging material has a relatively long retarding time, and the anti-bending performance, the anti-
permeation performance, the bonding performance, the
heat resistance and the freeze-thaw cycle resistance of the material after solidification are effectively improved.