The present invention relates to an apparatus for measuring underground water level and subsidence, and an apparatus for measuring underground water level and subsidence according to an embodiment of the present invention includes a first sensor and a magnetic field strength for detecting a resistance value or a change in resistance value Alternatively, a sensor unit including a second sensor for detecting a change in the magnetic field strength, a resistance value sensed through the first sensor or a change in resistance value satisfies the first reference value, or the magnetic field strength sensed through the second sensor Alternatively, when the change in magnetic field strength satisfies the second reference value, an alarm unit that provides a signal to the outside, an sensor unit, and an arduino connected to the alarm unit, and a resistance value when the first sensor contacts water, or The first mode and the second sensor for measuring the ground level by detecting a change in the resistance value detect the change in the magnetic or magnetic field strength when the magnet is adjacent to the magnet, and A control unit connected to the control unit and to operate any one of a second mode for measuring includes a display that can display the operating mode of the control unit and set.
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