A communication path managing method and a communication path managing system are provided. The communication path managing method includes the following steps: A plurality of communication paths connected to a vehicle are provided. A plurality of evaluation items of each of the communication paths are analyzed. A demand situation of the vehicle is identified according to a sensing data of the vehicle. An item importance information is obtained according to the demand situation. At least one of the communication paths is selected according to the evaluation items based on the item importance information.