C5 petroleum resin andmaleic anhydride modified linseed oil are used to prepare the waterborne resin, which is blended with core / shell styrene-acrylic emulsion as f ilm forming matetial and zinc phosphate, zinc oxide and silia solare used as activated pigments, to formulate thew aterborne over-rust corrosion protect ive coatings. Main factors that in fluence coating s properties are analyzed. This coatings is featured by its widematerials supply and low cost.