法益理論作為大陸法系刑法理論中的重要學說，近年來逐漸引起了內地刑法學界的重視，並為民法等部門法學者所關注。對法益理論的學理價值進行考量並對其適用維度進行擴張。法益理論不僅對刑法學具有重要價值，而且具有法理學價值。法益的生成過程是法律機制對法益的表達。法益與部門法機制的結合，形成部門法法益。法益理論經適當改造後可適用於民法、環境法等其他部門法領域。

As an important doctrine in criminal law theory, Legal Interests Theory gradually aroused the attention of the criminal law field, and was a concern for civil law and other departments of Law. In this paper, the theoretical value of the Legal Interests Theory will be considered and the applicable dimension will be expanded. The opinions of this article include: The Legal Interest Theory of great value is not only on the Criminal Law, but has a value of jurisprudence. The generation process of legal interest is a expression process of legal interest by the legal mechanisms. Legal interests of department law are combination by Legal interests and Law Mechanisms. After appropriate transformation, Legal Interests Theory can be applied to other departments of the law, including Civil Law, Environmental Law, and other areas of the law.