The invention relates to the technical field of engineering machinery, in particular to a walk motor gear shifting valve, a walk motor and engineering machinery. The walk motor gear shifting valve comprises a valve element, a first working oil port, a second working oil port, a third working oil port, an external control oil port and a feedback oil port; and the valve element is switched from lowspeed to high speed and from high speed to low speed under two different preset values, and motor input pressure values after gear shifting do not meet the gear shifting boundary conditions, so that the repeated switching of the high and low speeds of the walk motor can be effectively prevented, and the jitter of the engineering machinery under heavy-load working conditions is reduced.