Method and system for making vehicle-mounted navigation system have access to Internet

The invention provides a method and system for making a vehicle-mounted navigation system have access to the Internet. By installing a TF card with a wireless communication module in the vehicle-mounted navigation system and making communication established between the wireless communication module of the TF card and a communication module of an intelligent cell phone, the vehicle-mounted navigation system can have access to the Internet through the communication module of the intelligent cell phone, and therefore the network access function of the vehicle-mounted navigation system is achieved, and a driver can conveniently obtain messages on the Internet through the vehicle-mounted navigation system. Only a navigation card of the vehicle-mounted navigation system needs to be replaced with the TF card with the wireless communication module when the method and system are specifically executed, then the vehicle-mounted navigation system can conveniently have access to the Internet, and therefore operation is easy, and cost is low.