Intelligent pipe gallery is the “neural network” of smart cities, The safe and stable operation of the intelligent pipe gallery have important significance to the development of the city, the industrial production and our daily life. Based on embedded system technology, the disaster early warning system for intelligent pipe gallery is designed. We select the STM32F107 Interconnected microprocessor, this System can monitor the environmental information such as gas concentration, temperature and so on. It will monitor power pipeline and gas pipeline and other key regions completely，and also has the functions to alarm when parameter values exceeds the threshold and to start the emergency devices. It has important significance to stable operation of the intelligent pipe gallery and our daily life. Additionally, the system can be linked with video monitoring system，it can combine the big data generated by the Intelligent pipe gallery with the urban management, to promote development of smart city.