The invention relates to a water-
solubility printing ink and a method for preparing the same, in particular to a 
printing ink for a water-
solubility waterproof plastic woven bag and a method for preparing the same. The 
printing ink for the water-
solubility waterproof plastic woven bag is prepared by the following compositions in percentage by weight: 30 to 55 percent of crylic acid added 
rosin resin, 8 to 12 percent of nontoxic 
pigment, 12 to 20 percent of water, 8 to 12 percent of 
ammonia, 10 to 15 percent of pure acrylic 
emulsion, 3 to 6 percent of water-based 
wax, 0.1 to 1 percent of defoaming agent and 0.3 to 1 percent of flatting agent, which are in 
mass percentage. The printing ink solves the disadvantages of a 
solvent-type plastic woven bag after being printed by the printing ink has the influence of 
odor of the 
residual solvent; and a water-based woven bag after being printed has the poor 
water resistance, etc. The product can be widely used in the packaging printing of the plastic woven bag of grain, vegetable, tobacco, food, 
solid beverage and other industries, in particular to farm and sideline products, food and other aspects which relate to the packaging of hydrous products. The printed product can ensure safety and nontoxicity, can not produce the harm to 
human health and is a green and environment-friendly product.