The invention discloses a railway platform measuring robot which comprises a detection mechanism and a walking driving mechanism, wherein the detection mechanism is used for detecting the height of aplatform and the distance between a guide rail and the platform; and the walking driving mechanism is arranged on the guide rail, is connected with the detection mechanism through a connecting rod assembly and drives the detection mechanism to move along the guide rail. According to the railway platform measuring robot, the walking driving mechanism drives the detection mechanism to walk along theguide rail, the traditional manual measurement is replaced by machinery, the continuous measurement of the railway platform is realized, the detection strength is reduced, and the detection efficiency of the railway platform is improved; in addition, the detection mechanism is provided with a platform height detection mechanism and a space detection mechanism for detecting the space between the guide rail and the platform, and can respectively make floating rolling contact with the top surface and the side surface of the platform to realize fine adjustment; and the purpose of measuring the height of the platform and the distance between the guide rail and the platform is achieved by combining the coarse adjustment of a vertical linear driving module and a transverse linear driving moduleto the platform height detection mechanism and the space detection mechanism.