The invention discloses noise reduction and heat-insulation cement mortar and a method for preparing the same, and relates to the technical field of cement mortar. The noise reduction and heat-insulation cement mortar comprises, by weight, 75-95 parts of ordinary silicate cement, 45-55 parts of carbon fiber-graphene reinforcing agents, 25-35 parts of redispersible latex powder, 25-35 parts of ethyl acetate, 25-35 parts of ardealite, 20-25 parts of fly ash, 20-25 parts of reinforced particle compositions, 15-20 parts of polyurethane, 15-20 parts of gelatin, 5-10 parts of modified rubber powder,5-10 parts of aliphatic amine, 5-10 parts of N-sodium cocoyl sarcosinate, 5-10 parts of aluminum sulfate, 5-10 parts of water repellents, 2-6 parts of triethanolamine and 100-120 parts of water. Thenoise reduction and heat-insulation cement mortar and the method have the advantages that excellent noise reduction and heat-insulation effects can be realized by the noise reduction and heat-insulation cement mortar, the noise reduction and heat-insulation cement mortar is high in abrasion resistance, chemical corrosion resistance, strength and impact strength, good in toughness and convenient toconstruct, and the like.