The invention discloses a displacement sensor clamping device for bogie parameter testing, and aims at solving the problems of inconvenient installation, insecure contact with a surface to be tested, and reduction in accuracy and reliability. The displacement sensor clamping device comprises a magnetic force gauge stand assembly, a synthetical stiffness testing steel tube beam assembly and a support assembly. The synthetical stiffness testing steel tube beam assembly comprises a short square straight pipe beam, a first vertical square straight pipe column, a long square straight pipe beam, a transverse square straight pipe beam and a second vertical square straight pipe column. The support assembly comprises a first fixing seat, a second fixing seat, beam pressing plates and beam pressing plate bolts. The first fixing seat and the second fixing seat are arranged in a parallel mode. The short square straight pipe beam and the long square straight pipe beam are arranged at the top ends of the first fixing seat and the second fixing seat in an overlaid mode, and fixed through the two beam pressing plates and the beam pressing plate bolts. The lower ends and the upper ends of the first vertical square straight pipe column and the second vertical square straight pipe column are sequentially connected with the short square straight pipe beam and the transverse square straight pipe beam through bolts. The magnetic force gauge stand assembly is attached to the long square straight pipe beam or the transverse square straight pipe beam in an attraction mode.