Provided is a network information processing system, wherein the construction of an information processing system of the whole network is simplified, and network control intended by a user is able to be implemented, and which is provided with: a first network information processing apparatus for managing and controlling a first communication network; and a second network information processing apparatus for managing and controlling a second communication network that contains at least a portion of the first communication network therein. The first network information processing apparatus comprises: a converting means for converting the network connection construction of the construction section of the second communication network, which is related to the first communication network, into the form of a user provided network that is specialized to meet the second communication network under a prescribed conversion rule; and a transmitting means for transmitting the user provided network to the second network in
