Method and device for prompting that mobile terminal is left in vehicle

The invention provides a method and device for prompting that a mobile terminal is left in a vehicle, relates to the technical field of vehicles, and can timely remind a driver and passengers to take the mobile terminal when leaving the vehicle. The method comprises the steps of receiving a first control instruction, determining that the vehicle and the mobile terminal are in a connection state, outputting first prompt information, receiving a second control instruction, determining that no passenger exists in the vehicle and determining that the mobile terminal is located in the vehicle, and outputting second prompt information. Wherein the first control instruction is used for controlling the vehicle to execute a parking power-off action, the first prompt information is used for prompting a driver to carry the mobile terminal when leaving the vehicle, the second control instruction is used for indicating the vehicle to close all vehicle doors and vehicle windows of the vehicle, and the second prompt informa