In order to protect drainage facilities, enhance our city information management system and ensure urban safety, we comprehensively analysed the factors affecting safe operation of urban drainage. A wireless sensor networks monitoring the urban drainage pipeline based on Zigbee technology is presented. A corresponding multi-sensor data fusion model for urban drainage pipeline system after analysising and researching on the network and security status information of the urban drainage monitoring system in the perspective of multi-sensor data fusion (MSDF) is proposed. Thus, accurate judgments can be made about operation of the drainage network security. The risk of the operation of the pipeline system can also be analysed to take timely and reasonable measures to prevent accidents.