The innovation of supply chain based on intelligent cloud warehouse of China Railway No.5 Engineering Group Co.，Ltd aims to improve the quality and efficiency. With the intelligent cloud warehouse serving as the vehicle，the projects’ needs can be met and the resources can be integrated. This is the management mode which synergizes the process of material needs，procurement，storage and delivery，and contains the key information such as the material suppliers，contract documents and prices etc. In the process of promotion，the involvement of the company management has been strengthened and the digitalization technology has been properly harnessed in order to tackle the difficulties in materials management and to integrate resources. With the Big Data enabling the network sharing，the intelligent supply chain system has been developed to upgrade the material supply from one single business to covering the whole supply chain，to evolve from conventional warehouse storage to intelligent cloud warehouse management，and to transfer the corporate management from heavily relying on internal resources circulation to adopting both the internal and external resources circulation，and eventually the development of the company has been markedly accelerated.