Hydrologic observation device capable of penetrating frozen wall

The invention relates to a hydrologic observation device capable of penetrating a frozen wall. The hydrologic observation device comprises a plurality of hydrologic holes formed in the length direction of an inclined shaft or horizontal and inclined frozen construction passage; the hydrologic holes are formed in a way of being vertical to the ground and extend into the middle non-frozen region of the frozen wall; a pressure detection pipe is introduced into the hydrologic holes; water passing holes are formed in the pipe body, positioned in the non-frozen region of the middle of the frozen wall, of the pressure detection pipe; detection oil liquid is introduced into the pressure detection pipe; a pressure detection device used for detecting the inside pressure is arranged on the pressure detection pipe; during the inclined shaft frozen construction, the hydrologic holes are drilled; the pressure detection pipe is guided into the hydrologic holes; the detection oil liquid is pressed into the pressure detection