The utility model discloses a small -size crawler -type chain deep ploughing ditching all -in -one anticreep rail running gear, including the girder, be equipped with the supporting wheel in one side of girder, the pivot of supporting wheel is connected on the girder, and the take -up pulley also was connected to on the girder with back take -up pulley, preceding take -up pulley with the pivot of back take -up pulley before both ends were equipped with respectively around the supporting wheel, the guide rail be in the supporting wheel bottom and two wheel bodys of supporting wheel between pivot bottom contact, perforation formula track and drive gear meshing. The utility model discloses an install the guide rail in the middle of the bottom surface of supporting wheel is positive, the very effectual possibility that reduces the crawler travel unit off tracking can be effectual be walked forward along the straight line, also is difficult for derailing even go the track under the not good condition of road conditions. Through adopting perforation formula track, make tooth and perforation formula track intermeshing on the drive gear, thereby the tooth of drive gear upper end plays the guide effect makes the more steady operation of perforation formula track, further reduces the risk that the track derails in perforation formula track motion process.