[Purpose/significance] As the demand for international academic communication of domestic scientists is becoming more and more urgent, the solution on the international identifiers for Chinese scientists should be urgently developed.  
[Method/process] This paper analyzes the characteristics of the author identifiers and the trends of the international framework of researcher identifiers. Based on ORCID, the service on the international identifiers for Chinese scien-tists is proposed.
 [Result/conclusion] iAuthor (also called "Chinese Scientists Online")is constructed not only to provide the service on applying the International Academic ID for Chinese scientists, but also support the researchers' workflow in the paper submission, dissemination and repository. Now there have be more than 15,000 registers in iAuthor. In the era of Big Data the accurate information identification and interoperability between different systems will rely on the important middlewares such as international unique identifiers. The international identifier for Chinese scientists provided by iAuthor should support more multi-source information resources to achieve the integration and interoperability in Chinese academic libraries.