Nowadays, many oil paintings are copied by hand, and the cost is much lower than that of hand painting. Innovative high-precision waterproof canvas simulation oil painting, copied to pure cotton oily canvas by high-tech simulation technology, is a real oily inkjet printing. According to the production method, it can be divided into three categories, namely, mainstream printed decorative paintings; Decorative paintings mounted in kind; And hand-painted decorative paintings. Among them, hand-painted decorative paintings have high artistic value, so they are also more expensive and have collection value. And those hand-painted paintings that lack artistic value are rarely visited now. Physical decorative painting is a new type of decorative painting with some physical objects as its mounting content. Some decorative paintings mounted with China traditional knife coins, jade or porcelain are welcomed by some people. Printed decorative painting is the main product of decorative painting market, and it is a limited edition painting selected by publishers from painters' works. But at present, pirated decorative paintings are impacting the genuine decorative painting market like pirated CDs.