移动终端技术日臻成熟,为图书馆的服务提供了更广阔的平台。中国国家图书馆开设IOS移动客户端已逾5年,为用户的信息获取提供了更为便捷的渠道。然而,相比发达国家,中国国家图书馆移动客户端的设计、内容及职能等方面还存在不足。本文通过对比中美图书馆的iPhone客户端,为中国国家图书馆移动终端应用的优化提出建议。 Mobile terminal technology matures, providing a broader platform for library services. China National Library has opened IOS mobile client for more than 5 years, which provides a more convenient channel for users to access information. However, there are still some shortcomings in the design, content and functions of mobile clients in China National Library compared to developed countries. This article compares the iPhone client library between China and the United States to make recommendations for the optimization of mobile terminal applications in China National Library.