文章以我国副省级及以上图书馆阅读推广跨界合作实践案例为研究对象，对公共图书馆阅读推广跨界合作特点与不足进行分析。研究发现，我国公共图书馆阅读推广跨界合作内容主要集中在资源优化、空间建设和活动开展三方面，与公众现实需求存在差距；合作对象多为公益性群体，与盈利性机构合作较少；跨界合作联盟主要包括特定型和综合型两类，管理机制较为松散。基于此，文章提出公共图书馆阅读推广跨界合作的提升策略：需求导向，深化合作内容；主动出击，拓展合作对象；建立机制，保障联盟高质量发展。

Based on the investigation of crossover cooperation cases of reading promotion in the provincial and vise-provincial libraries, the paper analyzes the characteristics and deficiencies of crossover cooperation of public libraries’ reading promotion. The findings of this study include: the content of crossover cooperation mainly focuses on resource optimization, space construction, and activity development, while there is a gap between the supply and the actual demands of the public; the cooperation objects are mostly public welfare groups, and there is little cooperation with profitable institutions; crossover cooperation alliances mainly involve specific type and comprehensive type, and the management mechanism is relatively loose. Then, the paper further proposes the promotion strategy of crossover cooperation of public libraries’ reading promotion: demand-oriented deepening cooperation content; taking the initiative to expand cooperation objects; establishing a mechanism to ensure the high-quality development of the alliance.