Following the requirements for libraries in the Implementing Rules for Evaluation Standards of Tertiary Hospitals in Guangdong Province and taking municipal or above occupational disease prevention and control institutions as objects,the paper analyzes the construction situations, current collections and operating modes of libraries and discusses the setting of the occupational health information service function from 6 aspects of information sources, service objects and function setting, book retrieval, inter-library loan, service feedback and occupational health information service for labor.