Because of the issue which power consumption constraints the product working life is growing increasingly, low power topics has been concerned extremely. How to control the system and module's static power, dynamic power, peak power and other parameters strictly is particularly important. With the intelligent information management terminal product in pipe network as the platform, considering the system structure, power topology, chip selection, product work environment and overall details, this paper gets an exciting test result: the system sleep current is as low as 9.0561uA, the work current is as low as 22.670mA, then the battery life can be over 3 years. All of this provides strong support in the ultra-low-power research and implementation for intelligent terminal product.