诽谤罪公器私用现象是近年来一个持续的热点问题。本文首先对诽谤罪但书设计的薄弱环节——兜底条款进行规范分析;其次对诽谤罪公器私用进行实证分析,解析其公器私用的经济逻辑和社会动因;最后对比分析了解决诽谤罪公器私用的三种路径,认为诽谤罪国家公诉权的废除是当下的最佳选择。 The personal phenomenon of defamation is an ongoing hot issue in recent years. This article first analyzes the weak links in the design of defamation books, which includes the following aspects: standard analysis; secondly, the empirical analysis of the private use of defamatory criminals to analyze the economic logic and social motivation of their private use; Finally, Three private routes, that the abolition of public prosecution rights defamation countries is the best choice now.