The invention discloses heat-preservation and thermal-insulating water-based paint for a glass sliding door. The water-based paint is prepared from the following raw materials in parts by weight: 48-53 parts of waterborne polyurethane resin, 16-19 parts of waterborne hydroxyl acrylic acid, 0.2-0.4 part of polypropylene oxide glyceryl ether, 1-3 parts of tripropylene glycol monobutyl ether, 0.3-0.6 part of alkylol amine titanate, 7-10 parts of modified pure acrylic emulsion, 0.2-0.5 part of polyether modified organo-polysiloxane, 0.2-0.4 part of dimethicone, 0.2-0.4 part of an accelerant TMTM, 0.3-0.6 part of butyl glycidyl ether, 0.3-0.6 part of guar gum, 0.3-0.5 part of diacetone-acryloamide, 0.4-0.9 part of zeolite powder, 1-2 parts of pigment, 1-3 parts of hollow glass microspheres, 2-3 parts of silica sol and 12-16 parts of deionized water. Due to adoption of the silica sol in the water-based glass paint disclosed by the invention, the hardness of a paint film is improved, and the paint film is not easy to peel off and is smooth and flat; due to adoption of the hollow glass microspheres, the heat preservation and thermal insulation effects are achieved, and the cost is lowered; due to adoption of the modified pure acrylic emulsion, properties such as the flouring resistance, the bactericidal activity, the scrubbing resistance and the weather resistance of the water-based paint are improved; the water-based paint is high in practicability and applicable to popularization.