A communication coupling verification method executed by a computer, the communication coupling verification method includes identifying both setting information before a setting change of each of network devices arranged in a network and forwarding information before the setting change; identifying both setting information after the setting change and the forwarding information after the setting change; generating a first model before the setting change and a second model after the setting change by using the setting information before the setting change, the forwarding information before the setting change, the setting information after the setting change, and the forwarding information after the setting change; and determining influence of the setting change on the network based on a difference between the generated first model and the generated second model.