Abstract: The invention provides a lower-limb walking rehabilitation trainer, including two supporting frames, two gait simulation mechanisms installed on the two supporting frames respectively, and two pedals installed on the two gait simulation mechanisms respectively. The supporting frames are crutch type supporting frames. The gait simulation mechanisms include a special four-bar linkage and curve amplification mechanism. The four-bar linkage consists of a crank, a first connecting rod, a rocking rod and a rack rod that are articulated end to end. The upper end of the first connecting rod is articulated with the lower end of the second connecting rod in the curve amplification mechanism, the lower end of the third connecting rod in the curve amplification mechanism is articulated with the pedal, the rack rod is relatively fixed to the supporting frame, and the fourth connecting rod is connected to the inner side of the crutch type supporting frame.