A method for determining a vehicle acceleration, comprising: acquiring original acceleration data measured by an accelerometer in a running process of a vehicle, wherein the accelerometer and a GPS module are integrated in an OBD terminal, the OBD terminal is connected to a bus inside the vehicle through an OBD interface of the vehicle, and the OBD terminal and the OBD interface of the vehicle are connected by using a data cable; eliminating, according to the acquired original acceleration data, interference generated by gravity on the original acceleration data, and interference generated, on the original acceleration data, by a change of an placing angle of the accelerometer caused by moving of the accelerometer relative to the vehicle in the running process, wherein the eliminating interference generated, on the original acceleration data, by a change of an placing angle of the accelerometer caused by moving of the accelerometer relative to the vehicle in the running process comprises: processing the original acceleration data by using a locally linear embedding algorithm, and converting acceleration data measured after the change of the angle of the accelerometer caused by the moving of the accelerometer relative to the vehicle, into acceleration data measured in a case in which the angle of the accelerometer remains unchanged; and determining acceleration data of the vehicle in the running process according to original acceleration data that is obtained after interference is eliminated. acquiring original acceleration data measured by an accelerometer in a running process of a vehicle, wherein the accelerometer and a GPS module are integrated in an OBD terminal, the OBD terminal is connected to a bus inside the vehicle through an OBD interface of the vehicle, and the OBD terminal and the OBD interface of the vehicle are connected by using a data cable; eliminating, according to the acquired original acceleration data, interference generated by gravity on the original acceleration data, and interference generated, on the original acceleration data, by a change of an placing angle of the accelerometer caused by moving of the accelerometer relative to the vehicle in the running process, wherein the eliminating interference generated, on the original acceleration data, by a change of an placing angle of the accelerometer caused by moving of the accelerometer relative to the vehicle in the running process comprises: processing the original acceleration data by using a locally linear embedding algorithm, and converting acceleration data measured after the change of the angle of the accelerometer caused by the moving of the accelerometer relative to the vehicle, into acceleration data measured in a case in which the angle of the accelerometer remains unchanged; and processing the original acceleration data by using a locally linear embedding algorithm, and converting acceleration data measured after the change of the angle of the accelerometer caused by the moving of the accelerometer relative to the vehicle, into acceleration data measured in a case in which the angle of the accelerometer remains unchanged; and determining acceleration data of the vehicle in the running process according to original acceleration data that is obtained after interference is eliminated.