The present invention provides a network communication device that performs data communication by using a network, in which a reception capability at a self-machine side is reported to a transmission source side and this transmission source performs communication by a transmission method matched with the reception capability, comprising: a transmission source identification section for acquiring from received data transmission source identification information for identifying the transmission source; a reception capability setting section for setting the reception capability of a self-machine in accordance with the transmission source identification information; and a reception capability report section for reporting this reception capability to the transmission source by using the reception capability. Therefore, according to the network communication device of the present invention, a proper communication setting is possible by every transmission source, thus realizing a large degree of freedom of modes for use.