Commercial wood-plastic composite (WPC) floor have shortcomings of bad surface decoration effect.Through the surface painting to improve the surface effect, it's an important way to enhance the added value of the wood plastic composite floor and expand its application field.The homemade polyvinyl chloride (PVC) based WPC floor and polypropylene (PP) based WPC floor were used to cover with acrylic water-based paint which was environmentally friendly.