The utility model discloses a coal working face roof and floor water inrush disaster monitoring and forecasting device. The device includes a plurality of electrodes which are arranged in directional bedding boreholes, and two infinite electrodes which are arranged in a roadway; a plurality of directional bedding boreholes are provided, wherein each directional bedding borehole extends to at least two underground layers from coal working face roof or floor or from the roof and floor of a partial dangerous section; and the plurality of electrodes and the two infinite electrodes are respectively connected with a processor arranged at the ground through communication cables. With the coal working face roof and floor water inrush disaster monitoring and forecasting device of the utility model adopted, real-time monitoring of the change of geoelectric characteristics around the boreholes can be realized.