The invention discloses a water disaster probing method for a deep mineable coal bed. The water disaster probing method comprises the steps that drill hole probing is conducted, specifically, bedding drilling is conducted on a bottom plate aquifer dissolved fissure, a fissure zone, a fault water guiding zone, a water-rich area and a vertical water guiding structure, and suspected watered points of thin limestone initial fissures in bottom plate limestone are probed through a ground directional bedding drilling and precise bed controlling technology. By adopting the technical scheme of the invention, the ground directional bedding drilling and precise bed controlling technology is applied to drilling, the suspected watered points are probed, and the thin limestone initial fissures in the bottom plate limestone are subjected to net pulling probing; and the bottom of the coal bed is managed through drilling, regional exploration is conducted on the bottom plate aquifer dissolved fissure, the fissure zone, the fault water guiding zone, the water-rich area and the special vertical water guiding structure, and thus, hidden water disasters of the deep minable coal bed are probed; and positioning is accurate, precise governance in the next step is ensured so that the stoping work face can be governed, and the effect that bottom plate water bursting in the stoping process is avoided can be ensured.