The invention relates to the technical field of court paint, in particular to an environment-friendly waterborne court paint and a preparing method thereof. The environment-friendly waterborne court paint is prepared from
hydroxyethyl cellulose, filler,
dipropylene glycol monomethyl ether, acrylic
emulsion, a
thickening agent, water, an organosilicone auxiliary, a rheological agent, a multifunctional auxiliary, a
wetting agent, a dispersing agent, a sterilizing agent, a lubricating agent and a defoaming agent by weight. All the components are added and mixed step by step, and
hydroxyethyl cellulose and the rheological agent are added into water and stirred evenly; the multifunctional auxiliary is added to dissolve
hydroxyethyl cellulose; then, the dispersing agent, the
wetting agent, the lubricating agent and part of the defoaming agent are added, and the mixture continues to be stirred evenly; the filler is added, and the mixture is stirred and dispersed evenly; the acrylic
emulsion is added and stirred evenly, and then
dipropylene glycol monomethyl ether and the rest of the defoming agent are added and stirred evenly; then the organosilicone auxiliary and the sterilizing agent are added, finally the
viscosity is regulated through the
thickening agent, and the environment-friendly waterborne court paint can be obtained. The environment-friendly waterborne court paint is low in VOC content, good in
water resistance and color retention and high in abrasion resistance.