This article analyzes the benefit balance mechanism of digital music copyright based on the copyright law, explains the difference between the “fair use” and “legal license” principles, infringement issues and the corresponding responsibility identification problems of digital music copyright. Thus, the author puts forward her views and opinions into three aspects about the balance mechanism of reconstruction made from digital music copyright: the balance among interests of copyright authorized parties, the balance between law and technology, and the balance between charging standards and consumer consciousness of copyright law. Dialectical logic of digital music copyright in music transmission and how to balance the interests of all parties of digital music copyright holders are the innovations and emphasis of this article.