The invention discloses an automobile gear-shifting signal identifying method and device. The automobile gear-shifting signal identifying method comprises the following steps: 1, acquiring a rotationspeed signal and a wheel angular velocity signal of an automobile engine in real time; 2, calculating a gear shifting rate according to the rotation speed signal and the wheel angular velocity signalof the automobile engine; 3, filtering the gear shift rate calculated in the step 2; 4, calculating the ratio of the gear shifting rate at each moment to the gear shifting rate after low-pass filtering; 5, analyzing the ratio and comparing the ratio with 1, and when the difference value between the ratio and 1 exceeds a set threshold value, judging automobile gear shifting. The gear-shifting signal identification is achieved without hardware, and the method and the device can be widely applied to various types of vehicles. On a vehicle capable of directly acquiring gear-shifting signals, a calculation result of the method can be mutually verified with an existing gear-shifting signals of the vehicle, and the accuracy and authenticity of the gear-shifting signals are ensured; on a vehicle which cannot provide gear-shifting signals, the gear-shifting signals can be quickly identified through the method, and external input is provided for relevant control strategies of the whole vehicle.