NOVELTY - Manufacture of nano-calcium carbonate-wood composite involves peeling wood log, sawing to predetermined size, drying, performing microwave treatment, obtaining pretreated wood, mixing calcium carbonate, surfactant and water, reacting, stirring, ultrasonically dispersing, adding sodium octaborate, diammonium phosphate, boric acid, ammonium molybdate, carbendazim, benzyldimethyldodecylammonium chloride, imidacloprid and sodium lauryl sulfate, stirring, obtaining wood modifier, soaking pretreated wood in the wood modifier, heat-preserving, cooling, drying and cooling.    USE - Manufacture of nano-calcium carbonate-wood composite (claimed).    ADVANTAGE - The method enables efficient manufacture of nano-calcium carbonate-wood composite having excellent anti-erosion effect and stability by simple, economical and environmentally-friendly process.    DETAILED DESCRIPTION - Manufacture of nano-calcium carbonate-wood composite involves peeling wood log, sawing to predetermined size, drying at 50-80 degrees C for 8-24 hours, controlling moisture content to 8-25%, performing microwave treatment for 10-30 minutes, obtaining pretreated wood, mixing 20-40 parts mass nano-calcium carbonate, 0.5-2 parts mass surfactant and 300-400 parts mass water, reacting at 60-85 degrees C, stirring at 6000 rpm or more for 20-50 minutes, ultrasonically dispersing at 60-75 degrees C for 10-20 minutes, adding 10-15 parts mass sodium octaborate, 8-12 parts mass diammonium phosphate, 5-8 parts mass boric acid, 1-4 parts mass ammonium molybdate, 8-12 parts mass carbendazim, 4-7 parts mass benzyldimethyldodecylammonium chloride, 3-6 parts mass imidacloprid and 1-3 parts mass sodium lauryl sulfate, stirring at 40-60 degrees C and 80-200 rpm for 20-40 minutes, obtaining wood modifier, soaking pretreated wood in the wood modifier having concentration of 20-30%, processing at -0.08 to -0.1 MPa for 30-60 minutes, heat-preserving at 40-70 degrees C for 1-4 hours, cooling to room temperature, drying at 60-80 degrees C for 12-24 hours and 90-120 degrees C for 8-16 hours, respectively, cooling to room temperature and controlling water content to 5-15%.