The invention relates to a network switching device for point-to-point connection in safe network communication, which is formed by a switching module and communication nodes by communication circuits, wherein the switching module is composed of a plurality of physical layer transceivers and complex programmable devices, the physical layer transceivers and the complex programmable devices use MII(media independent interface) connection; each communication node is characterized by being composed of a physical layer transceiver, a first in first out memory and a complex programmable device; the physical layer transceivers of the nodes are connected with the physical layer transceivers of the switching modules; the first in first out memories are connected with the physical layer transceivers of the nodes; and the complex programmable devices of the nodes are connected with the first in first out memories and the physical layer transceivers of the nodes. The first in first out memories realize non-synchronization of data without using software, thus improving the reliability of the system to a great extent, and the device does not have complicated protocol, thus improving the certainty in communication.