The invention discloses a preparation method of a napkin paper product with high-precision artistic patterns. The napkin paper product comprises a napkin paper carrier, a water-soluble film and a sealing layer, the water-soluble film is attached to the single face or the double faces of the napkin paper carrier through the sealing layer, and patterns are printed on the outer end face and / or the inner end face of the water-soluble film; the edge of the paper napkin carrier wraps the periphery of the water-soluble film; and the paper napkin carrier is prepared from the following components in parts by weight: 60 to 85 parts of paper pulp, 45 to 62 parts of polylactic acid, 20 to 25 parts of modified nano montmorillonite, 18 to 23 parts of PEG-40 hydrogenated castor oil, 18 to 21 parts of a hydrophilic polymer, 15 to 20 parts of anionic polyacrylamide, 15 to 20 parts of perlite powder, 16 to 19 parts of sweet-scented osmanthus extract, 12 to 17 parts of a folium artemisiae argyi extracting solution, 10 to 15 parts of o-hydroxybenzophenone derivative, 9-14 parts of graphene oxide and 3-8 parts of an antibacterial agent. The napkin paper product is simple in preparation process, high in antibacterial performance, high in degradation rate, low in cost, safe, environmentally friendly and suitable for the field of packaging of napkin paper products and other paper products.