The invention discloses a vehicle-mounted short-distance communication network based geographic position routing method. Geographic position storage nodes and geographic position routing nodes are deployed in a V2X network, and road-side nodes send geographic position information of all vehicle-mounted nodes to the geographic position storage nodes for storage. Data packs sent by source nodes are transmitted to source road-side nodes in a flooding mode, the source road-side nodes receives requests and then sends the geographic position information of destination nodes to the geographic position routing nodes, the geographic position routing nodes looks for the geographic position storage nodes and obtains the geographic position information of the road-side nodes which the destination nodes belong to according to the geographic position information of the destination nodes and then establish routing between the source road-side nodes and the destination road-side nodes, established routing information is sent to the source road-side nodes, the source road-side nodes sends the data packs of the source nodes to the destination road-side nodes, and the destination road-side nodes send the data packs in a flooding mode. The vehicle-mounted short-distance communication network based geographic position routing method can achieve quick data transmission among nodes.