Entering the era of big data, as one of the main sources of massive data, the application of various technologies in security industry has produced huge data. Moreover, these data are becoming important strategic resources at the enterprise, social and national levels. In the future, security industry is a typical data-dependent industry, relying on data to speak. The fusion of security and big data is mainly embodied in Storage, Observation and Usage. Supported by big data, the storage model of data captured can be stored in a distributed data storage system in an efficient, safe and inexpensive way, and the data can be queried, retrieved and located accurately by big data technology. In the data application level, through the structured association of each system, we can quickly search all the information of the event, so as to achieve the practical application of the data. Through Helios big data architecture platform, we can improve the performance and maintainability of product functions.