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Data processing technology is a key technology in ZIGBEE wireless sensor network system. Based on the current fact that ZIGBEE wireless sensor network is suffering from data excess and information shortage, this paper introduces the complex event processing technology, takes the angle from the nature of information and event processing, and researches on the data analysis method of ZIGBEE wireless sensor network system. It analyzes the hierarchical characteristic inherited in ZIGBEE wireless sensor network, proposes an event hierarchical processing model for information therein, then analyzes a large amount of data on different layers by complex event processing technology such as hierarchical viewing, event filter, event mapping, event relativity, and gets optimized analysis result. The application test of goods information management system in supermarket ZIGBEE wireless sensor network demonstrates that the proposed hierarchical information processing model is reasonable and data analysis method is effective, hence the future application can be well expected.