The invention discloses an in-car Bluetooth communication method based on an Android operating system. The method comprises a detecting step, a loading step and a communication step, wherein, in the detecting step, in-car Bluetooth equipment is detected; in the loading step, when the in-car Bluetooth equipment is detected to be started, a Bluetooth service module installed in the Android operating system is loaded; in the communication step, the in-car Bluetooth equipment is controlled to be communicated with a preset mobile terminal by the Bluetooth service module, wherein the Bluetooth service module is a system service which is installed in a framework of the Android operating system. According to the in-car Bluetooth communication method and the in-car Bluetooth communication device based on the Android operating system disclosed by the invention, the system service for communication with the in-car Bluetooth equipment is added in the framework of the Android operating system so as to carry out reading and writing operations upon the in-car Bluetooth equipment, therefore, in comparison with the way that the in-car Bluetooth equipment is directly operated in an in-car Bluetooth application program, the method and the device have the advantages that the in-car Bluetooth application programs are more stable, user experience is more friendly, and life cycle of the in-car Bluetooth program is easier to control.