The invention discloses a micronano metal fiber surface topography measuring device, a use method thereof and a movement distance measuring method of a drive in the device. A substrate is arranged on a base through a rail. A chute is arranged in the middle of the base. A template is placed in the chute. A visual window is arranged at the center of the base. One end of a cross beam is connected with the base. One end of a side beam is connected with a support leg, and the drive is arranged on the other end. One end of an electrode is arranged on the side beam. The other end points to the surface of the template through the visual window. The distance from one end, which points to the template, of the electrode to the surface of the template is 0.01 to 100nm. According to the invention, a produced tunnel current effect is used to scan the surface of a measured object, and the three-dimensional shape of the surface of the measured object is acquired through difference in current magnitude.