The invention discloses a guide pipe measurement device, which comprises a base. The top portion of the base is fixedly equipped with a vertical plate and a support block. The support block is arranged at the left side of the vertical plate; the front end and back end of the top portion of the support block are respectively and movably equipped with a clamping block; the top portion of the supportblock is fixedly connected with support rods arranged at the front and back surfaces of the clamping blocks; the top portions of the support rods are fixedly connected with a support plate; the top portion of the support plate is fixedly connected with a cylinder; a push rod of the cylinder runs through the support plate and is fixedly connected with a press block; and a guide pipe body is arranged between the two clamping blocks. Through arrangement of the clamping blocks, connection blocks, transmission blocks and transmission rods, an effect of adjusting the size of a groove according to the size of the guide pipe is achieved, a wire conduit is allowed to pass through the groove, and a user can measure different sizes of guide pipes without adding another measuring device, thereby saving cost and facilitating people to use.