Alcohol-free fountain solution and preparation method thereof

The invention relates to an alcohol-free fountain solution. The alcohol-free fountain solution comprises the following components in parts by weight: 2-4 parts of phosphate buffer agent, 2-6 parts of guar gum, 3-5 parts of gleditschia saponin, 1-4 parts of starch acetate, 1-3 parts of pulullan, 1-3 parts of polyether modified organic siloxane, 0.5-2 parts of citric acid, and 45-55 parts of de-ionized water. Alcohol substances in the alcohol-free fountain solution are reduced, volatilization of organic matters in air in use is reduced, VOC in the environment is reduced, and therefore the alcohol-free fountain solution is more environmentally-friendly.