Abstract：Copyright is the foundation and the core of economic rights of authors. With the development of technology,the mode of copy expands increasingly from the pure print copy to analog copy and even to digital duplication, sothat the essence of copy is lost. And because different countries possess different theoretical foundation of theright and legislation structure, it is difficult to reach a unanimous conclusion about the connotation of copy. Inperspective of theory of incentives, copy indicates the representation of works form，and is also one of the meansthat the owners control the market interests in works, which reflects the copy s nature of non-originality and com-petition. It is of extremely vital significance to understand this feature for recognizing the fresh modes of copy suchas intermodal copy, spontaneous reproduction and temporary reproduction. In the two-dimensional views of thenon-onginality and competition, the profits produced from new mode of reproduction should be distributed regard-ing copy and creation as standard in the competitive market, consequently realizing the dynamic balance betweenpublic interests and exclusive benefits of copyright owners in the precondition of inspiring copyright owners, andenabling both the public’ s access to works and copyright owner's performance of the exclusive right in the rightplace in copyright law.