The invention discloses high-performance water-based wood coating which is prepared from the following raw material components in parts by weight: 50-75 parts of silica sol-acrylic polyurethane composite emulsion, 1-5 parts of nanometer aluminum oxide, 1-5 parts of nano-zinc oxide, 0.1-0.25 part of polytetrafluoroethylene, 1-3 parts of bamboo charcoal powder, 0.5-3 parts of bentonite, 1-2.5 parts of alcohol ester 12, 1.5-3 parts of tripropylene glycol n-butyl ether, 0.1-0.8 part of 2,2,4-trimethyl-1,3-pentanediol isobutyrate, 0.1-0.3 part of 2-amino-2-methyl-1-propyl alcohol, 0.1-0.5 part of a silane coupling agent, 0.1-1 part of an antifoaming agent, 0.5-3 parts of a thickening agent and 5-20 parts of water. The high-performance water-based wood coating disclosed by the invention is high in strength, high in wear resistance and scratch resistance, excellent in antibacterial performance, high in water resistance and aging resistance, simplicity in construction and long in service life.