The invention relates to the field of paint processing, and particularly discloses water-based wood paint with an anti-corrosion function. The water-based wood paint is prepared from the following rawmaterials in parts by weight: 500-800 parts of water-based resin, 2-5 parts of a defoaming agent, 1-2 parts of a wetting agent, 30-80 parts of water, 10-20 parts of 1,2-benzisothiazolin-3-one, 10-20parts of Dowicil-75 and 10-20 parts of filler. The water-based wood paint provided by the invention has an anti-corrosion function.