The rut geometric analysis is necessary for studying the interaction between the driving wheel and the loose soil. A laser scanner that consisted of a laser sensor and a 2-D traversing frame was developed to measure the digit parameters of ruts in the soil bin which were produced by the rigid wheel on loose soil. The maximum scanning area was 650mm×400mm, measurement range was 0.05～65m and scanning resolution was 0.1mm. A laser scanner with 1-D traversing frame which might be more appropriate for the measurements of rut deformation in the infield of rover was also discussed. The experimental results showed that the scanners could obtain the sections and the 3-D graphics of the surface of ruts by using contactless measuring method without disturbing the ruts. 