The invention provides an adjusting method and device of automobile driving force and an automobile, and relates to the technical field of automobile control. The adjusting method comprises the stepsthat current driving parameters of the automobile are obtained, and the current driving parameters include a current automobile speed, current accelerator pedal opening degrees, an accelerator pedal change rate, a motor speed, current residual capacity of a power battery and consumed power of a whole automobile electronic accessory; according to the current vehicle speed, the current accelerator pedal opening degrees and the pre-stored automobile weight, current motor demand power of the automobile is obtained; according to the current residual capacity and the consumed power, power provided by the current power battery for a motor is obtained; and when an air conditioner and/or an electric heater of the automobile are/is turned on, if the current residual capacity, the current motor demand power and the power supplied by the current power battery to the motor meet the preset conditions, the driving force of the automobile is adjusted according to the current automobile speed, the current accelerator pedal opening degrees, the accelerator pedal change rate and the motor speed. The adjusting method meets the power demands of the automobile for rapid acceleration.