The invention discloses a vehicle-mounted internet system, which comprises a data detection module, a vehicle control module, a vehicle-mounted networking module, and an oil nozzle remote regulating module; the data detecting module is used for detecting the vehicle running state data and sending to a service center; the service center performs the remote diagnosis on the vehicle according to thereceived data of the vehicle-mounted networking module, and remotely allocating the vehicle running; the remote diagnosis includes that the service center appoints the running scheme for reducing oilconsumption through analysis and diagnosis of the fuel consumption during the vehicle running process, and then sending the scheme to the vehicle-control module; the oil nozzle remote regulating module can receive a control command of the service center to control the oil volume spray. The vehicle-mounted internet system has the advantages of remotely allocating the oil volume of vehicles, savingthe vehicle using cost through controlling the oil volume while performing the remote anti-theft control, preventing vehicle from being rapidly transferred by stealers after stealing the vehicle and increasing the opportunity of taking back the vehicle.