The invention discloses a fueling control method and system for a vehicle, and relates to the field of vehicle safety. The fueling control method for the vehicle is used for turning off an engine of the vehicle before the vehicle is fueled and comprises the steps that whether a vehicle fuel tank cap is open or not is determined; when the vehicle fuel tank cap is opened, a user is reminded of turning off the engine for turning off the vehicle, and timing is started; whether the time of the timing exceeds a first threshold or not is determined; when the time of the timing exceeds a first threshold, whether the engine of the vehicle is turned off or not is determined; and when the engine of the vehicle is not turned off, the engine of the vehicle is automatically turned off, and the user is stopped reminding of turning off the engine of the vehicle. A corresponding system is also provided. According to the fueling control method and system for the vehicle, the engine is turned off before the vehicle is fueled, so that it is ensured that the danger of blasting caused by the engine being not turned off when the vehicle is fueled can be avoided, and fuel safety performance of the vehicle is greatly improved.