NOVELTY - Preparation of coated window decorative material involves turning fabric, sewing, singeing, spraying, dyeing, finishing, shaping, preparing 300x 600 D different colored oxford fabric, sequentially coating white pulp, black pulp and mortar on the resultant product with by knife coating, rolling the coated fabric by pressure roller, coating the resultant product with surface pulp by knife coating, rolling by pressure roller, and coating color paste on other side of the fabric by knife coating.    USE - Preparation of coated window decorative material (claimed).    ADVANTAGE - The method enables preparation of coated window decorative material having excellent insulating property, moisture resistance, sound-proof property and durability, by discharging less amount of smoke and without producing toxic and corrosive gases.    DETAILED DESCRIPTION - Preparation of coated window decorative material involves turning fabric, sewing, singeing, spraying, dyeing, finishing, shaping, preparing 300x 600 D different colored oxford fabric, coating the resultant product with white pulp by knife coating, rolling the coated fabric by pressure roller, forming coat (c1) on one side of the fabric, coating the resultant product with black pulp by knife coating, rolling by pressure roller, forming coat (c2) on the coat (c1), coating the resultant product with mortar by knife coating, rolling by pressure roller, forming coat (c3) on the coat (c2), coating the resultant product with surface pulp by knife coating, rolling by pressure roller, forming coat (c4) on the coat (c3), and coating the color paste on other side of the fabric by knife coating. The white pulp contains 8-19 pts. wt. polyurethane, 21-32 pts. wt. acrylic acid, 35-40 pts. wt. phosphorus-based halogen-free flame retardant dispersion, 8-15 pts. wt. titanium dioxide dispersion, 10-15 pts. wt. foam stabilizer, 0.8-1.5 pts. wt. foaming agent and 0.5-1 pt. wt. aqueous ammonia. The white pulp has pH value of 9.8-10 and viscosity of 2200-2500 cps. The black pulp comprises 8-19 pts. wt. polyurethane, 21-32 pts. wt. acrylic acid, 35-40 pts. wt. phosphorus-based halogen-free flame retardant dispersion, 8-15 pts. wt. titanium dioxide dispersion, 10-15 pts. wt. foam stabilizer, 0.8-1.5 pts. wt. foaming agent, 0.5-1 pt. wt. aqueous ammonia, 1-6 pts. wt. black colorant and 5-12 pts. wt. binder. The black pulp has pH value of 9.8-10 and viscosity of 2200-2500 cps. The mortar comprises 8-19 pts. wt. polyurethane, 21-32 pts. wt. acrylic acid, 35-40 pts. wt. phosphorus-based halogen-free flame retardant dispersion, 8-15 pts. wt. titanium dioxide dispersion, 10-15 pts. wt. foam stabilizer, 0.8-1.5 pts. wt. foaming agent, 0.5-1 pt. wt. aqueous ammonia, 0.2-2 pts. wt. black colorant and 5-12 pts. wt. binder. The mortar has pH value of 9.8-10 and viscosity of 2200-2500 cps. The surface pulp comprises 50-60 pts. wt. polyurethane, 20-30 pts. wt. acrylic acid, 20-30 pts. wt. phosphorus-based halogen-free flame retardant dispersion, 10-15 pts. wt. titanium dioxide dispersion, 8-15 pts. wt. foam stabilizer, 1-2.2 pts. wt. foaming agent and 0.5-1.2 pts. wt. aqueous ammonia. The surface pulp has pH value of 9.8-10 and viscosity of 2200-2500 cps. The foaming agent includes cyclopentane, n-butane and/or 5-15% sodium bicarbonate solution. The titanium dioxide dispersion includes dispersion of titanium powder and aqueous black pigment. The titanium powder dispersion is obtained by mixing and dispersing titanium pigment, water and dispersing agent in a weight ratio of 55-65:35-45:0.5-1. The color paste comprises 14-28 pts. wt. aqueous acrylic emulsion, 4-8 pts. wt. polyurethane, 20-30 pts. wt. phosphorus-based halogen-free flame retardant dispersion, 0.1-0.27 pt. wt. defoaming agent, 0.5-1.9 pH stabilizer and 2-5 pts. wt. maleic acid, sodium-sec-octyl sulfonate. The color paste has viscosity of 20000-30000 cps.