The paper discussed the main problems about the complex data sources and customization, sharing and dynamic maintenance of information analysis algorithms in the field of HIS information analysis. The meta-data description of information analysis algorithms was given. The information analysis algorithm management module and information analysis algorithms library system based on Web Service were built. The paper realized the loose coupling of the data and the algorithm and the dynamic management of information analysis algorithms library compared with the traditional information analysis algorithms library. Experiment results show that the system can improve the maintainability and generality of information analysis in HIS.