With the development and application for seamless network constraction and optical fiber pull far technology.Distributed devices have been the main form of network construction.Network element equipment extended to the margin of users makes quality assurance of access network has been more and more important.The traditional power gareetee style cannot reach the demand of remote communication equipment.This article based on the voltage range（adjustable range from 225V to 380V） in China Mobile’s standard rate.Through summarise of the application of this System in practice

to discuss the system application in distributed base station.