PURPOSE: To provide an emergency stop performance test device for a hydraulic elevator which can omit the complicated preparation work such as the drilling work in the installation to a guide rail by adopting the wedge system in substitution for the bolt tightening and vice tightening, can be mounted and demounted in a simple manner, and can reduce the number of parts.

CONSTITUTION: On a bracket 20, an upwardly narrowed cut 23 which is formed by oppositely setting a vertical inner wall surface 21 and an inclined inner wall surface 22 is formed, and on the bracket 20, a wedge body 30 having a vertical frictional surface 31 and an inclined smooth surface is installed so as to be slidable along the inclined inner wall surface 22, and the side plate part 7b of a guide rail 7 is inserted into between the vertical inner wall surface 21 and the vertical frictional surface 31.