The invention discloses a vehicle-mounted information system based on Beidou communication, which selects an Android software system and comprises a core processing unit, a power management unit, a CAN bus interface circuit unit, a K bus interface circuit unit, a Beidou/GPS navigation unit, a 3G wireless network module, a driving assisting function module and a liquid crystal display control module, wherein the core processing unit is connected with the CAN bus interface circuit unit, the K bus interface circuit unit, the Beidou/GPS navigation communication module, the 3G wireless network module, the driving assisting function module, the liquid crystal display control module and a touch screen; the liquid crystal display control module is connected with a liquid crystal display; the power management unit is connected with and provides power for the core processing unit, and is connected with and provides power for the other units; and a touch screen control module is connected with the touch screen. The vehicle-mounted information system disclosed by the invention is low in cost, good in stability, powerful in function, good in universality and strong in anti-interference capacity, and meets requirements of different working conditions.