Underground drilling imaging device

The utility model provides an underground drilling imaging device, which is applied to underground upward drilling and comprises a probe, which comprises a first end and a second end which are opposite to each other and is used for acquiring images in a drill hole, and the first end is one end far away from an opening of the drill hole; the supporting rods are arranged at the first end and the second end of the probe respectively and used for supporting the probe, and the sectional area of the supporting rods is larger than that of the probe; the push rod is connected with one end of the support rod close to the drilling opening; and the host is connected with the probe through a cable and used for receiving the acquired image of the probe and controlling the probe to work. The supporting rods at the two opposite ends of the probe are used for effectively supporting the probe, the probe is prevented from making contact with the wall of a drill hole to cause contamination or damage, meanwhile, the rigidity of