Lifesaving hole wall cleaning device

The utility model discloses a lifesaving hole wall cleaning device which comprises a short section, a first drill bit and a second drill bit. The first drill bit and the second drill bit are fixedly installed on the short section, and the first drill bit is located below the second drill bit. The distance between the first drill bit and the second drill bit is larger than the length of a single hole sweeping section. A plurality of scrapers are arranged on the lower disc surfaces of the first drill bit and the second drill bit; the scrapers are dispersedly arranged on the edges of the lower disc surfaces; according to the drill bit, the first drill bit and the second drill bit are arranged, and the head stretching stone on the hole wall section swept by the first drill bit possibly stretches out again, so that when the second drill bit passes, the stretching head stretching stone can be further cleaned, the hole wall can be fully cleaned, and the drill rod is prevented from being clamped when being lifted up.