The invention relates to a limiting device for a spring type guide track, belongs to the field of guide track limiting devices, and solves the problems that an existing limiting device is complicatedin structure and large in size, and thus, it is difficult to mount products on a guide track rapidly and difficult to separate the same from the guide track reliably. The limiting device comprises a limiting block, a pressure block and a rotating shaft, wherein the limiting block is a hollow cylinder; the pressure block is provided with a through hole of which the cross section is T-shaped; the T-shaped through hole comprises a first through hole with a first diameter and a second through hole with a second diameter; the first diameter is greater than the second diameter; the limiting block isplaced in the first through hole, and the diameter of the limiting block is greater than the second diameter; the rotating shaft can penetrate through the limiting block and the second through hole;the pressure block and a box which supports the guide track are fixed by the two ends of the rotating shaft through fixing assemblies separately; an annular space is formed by the rotating shaft and the inner wall of the limiting block; and a compression spring which can pop up the limiting block is arranged in the annular space. By the limiting device which is simple in structure and small in size, the products on the guide tracks can be rapidly mounted and reliably separated.