Alcohol-free printing fountain solution and preparation method thereof

The invention discloses an alcohol-free printing fountain solution and a preparation method of the alcohol-free printing fountain solution. The alcohol-free printing fountain solution comprises, by weight, 10-15% of propylene glycol monomethyl ether, 2-4% of ethylene glycol, 4-8% of a citric acid, 0.5-1.5% of sodium hydroxide, 15-25% of glycerinum, 0.1-0.3% of sodium carboxymethyl cellulose, 0.05-0.1% of lauroyl diethanol amine, 0.4-0.6% of liquid tea saponin, 0.3-0.6% of dodecyl dimethyl benzyl ammonium chloride, 0.5-1% of dodecyl glucoside, 0.05-0.1% of 2-ethyl hexanol and 50-55% of water. The alcohol-free printing fountain solution does not contain isopropyl alcohol and is low in toxicity, safe, environmentally friendly, good in printing effect and low in cost, thereby having huge economic benefit and social benefit.