A distributed data storage system and method are disclosed. The distributed data storage system includes: an interface machine process module; at least one service process module; and at least one storage module. The interface machine process module is configured to receive a storage request containing data to be stored from a storage requester and distribute the storage request to one of the at least one service process module; the service process module is configured to receive the storage request from the interface machine process module and assign a storage identifier for the date contained in the storage request; the at least one storage module is configured to store the data according to the storage identifier assigned by the service process module. The distributed data storage system and method of the present invention can provide stable, simple, highly efficient, and low cost mass data storage and read/write services for users.