Vehicle-loaded GPS navigation early-warning device

The utility model discloses a vehicle-loaded GPS navigation early-warning device which comprises a GPS satellite communication module, a first microprocessor, a second microprocessor, a data storage module, a display screen, an input module and an alarm module. Early-warning road information is stored in the data storage module. The display screen, the input module and the alarm module are connected on the first microprocessor. Satellite positioning signals are received by the GPS satellite communication module and are converted into the longitude coordinate and the latitude coordinate of a present position. The coordinate information is then transmitted to the first microprocessor and the second microprocessor. The first microprocessor is utilized for determining an optimum traveling route and controlling the alarm module to emit prompts of traveling directions along the way. The second microprocessor is utilized for ceaselessly receiving the current longitude coordinate and the latitude coordinate of a vehi