This invention relates to a polyvinyl alcohol built color oil painting cloth and its preparation method. It is specially used to paint by painter and applicable to oil painting, acrylic painting and opaque watercolor painting, it belongs to the article of painting. The main process of it is preparation of the paint of bottom and middle skin coat. Then coating the bottom layer on the basis coat anddrying. Secondly coating one to three layer middle coats and drying. At last coating one to three layer paste and drying to get the product. This invention adopts different nature high molecule polymer to build the paint of bottom and middle skin coat, and combines the coated technology of 'sandwich' the function of the coat is stable, the colors is colorful. The intensity of coat membrane is high, there isn't colors migration, the membrane of the coat is intensity and the oil can not leak out. It can not lead to the crack, fold crack and breaking off of the coat, and it can not collapse because of the temperature difference and change of moisture. The light-resistant of the coat is good, and it is not easy to become yellow to affect the shelf state of the product.