[Purpose/significance] By comparing with the relevant contents of public library law in Japan and South Korea, this paper provides reference for the development and improvement of public library law in China.[Method/process] The status for the development of the public library law in the three countries of China, Japan, and Korea will be introduced firstly. And then the similarities and differences of service content, the legislation, legal system, management system, and librarian setup in the three countries' public library law will be compared and analyzed.[Result/conclusion] So as to promote the further development of the library business, three suggestions for the development of library law in China are proposed:improving the legal system of public libraries; defining the entry thresholds for librarians; formulating quantitative standards for funding.