The blockchain is a distributed public ledger technology that originates from the digital crypto currency bitcoin. Blockchain's key advantages include decentralization, time-series data, collective maintenance, programmability and security. It breaks through the limitation of traditional center-based technology and has broad military development prospect. Nevertheless, with the distributed embedded devices in the battlefield in the future, the cooperative computing task needs to be performed effectively and rapidly among them. Furthermore, in order to achieve the aim of the cooperative computation on the multi-device, the urgent and primary problem is how to realize the effective share and secure storage about the critical data. Consequently, given the requirement of data sharing, the architecture design of data distributed secure storage based on the blockchain is proposed in this paper. Besides, the vivid descriptions of some key functional modules are given.