The invention relates to a public security big data analysis and processing system and method. The system comprises an access analysis module, a calculation analysis module and a support service module. The access analysis module is used for adapting to various different data sources, real-time data is written into a distributed real-time message queue Kafka, offline batch data is stored in a bigdata platform HDFS by a big data component Hive for processing mass data, and unified access of various data under different application scenes is realized. The calculation and analysis module achieves the functions of data distribution type real-time calculation and analysis, real-time monitoring and comparison, real-time alarm pushing, mass data statistical analysis, mass data collision and thelike. And the support service module realizes full-text retrieval service, deployment and control early warning service, study and judgment analysis service, data collision service, GIS service and the like, and provides a service interface for upper application. The technical problems that data formats of all service systems in the public security system are not uniform, the systems are incompatible, information islands are formed, and the association value of the data cannot be generated are solved.