The invention discloses a method for creating a virtual channel link in an avionics system in real time, and aims to provide a method for creating a virtual channel link that is simple, reliable, fast, flexible, and low in complexity. The present invention is realized through the following technical solutions: based on the high-speed serial RapidIO bus, a virtual channel link creation request is sent to the node management software, the channel name is used as the primary identifier of the virtual channel link between the nodes of the two communication parties, and the external micro-controller The unit MCU or the debugging interface of each communication node, inject the virtual channel name and virtual channel related parameters of the nodes of both communication parties; then, the node management software stores the virtual channel creation request information initiated by each communication node, and the related parameters of the sender and receiver. According to the consistency judgment result, the related configuration information of the virtual channel is sent to the relevant communication nodes, and wait for each relevant node to return the confirmation character ACK signal to determine whether the creation of the virtual channel link is completed.