The invention discloses a scouring prevention experiment device and method for mine collapse column water inrush under a confined water seepage function, and relates to a scouring prevention experiment device and method for the mine collapse column water inrush. An upper groove body bottom plate is arranged on a lower groove body notch; a first connection pipe is fixedly connected with a through hole of the upper groove body; a pressure stabilization water pump in the lower groove body is fixedly communicated with the first connection pipe through a hose; a column body is vertically arranged in the upper groove body and is provided with a plurality of water outlets; a sponge cover covers the outer side of the column body; the outer side of the sponge cover is tightly sheathed with at least one metal screen; the outer surface of the metal screen on the outermost side is tightly sheathed with a plurality of snap rings; the plurality of snap rings are detachably connected with the upper groove body; one end of a second connection pipe is fixedly arranged on the bottom of the column body; the other end of the second connection pipe is in detachable sealing communication with the first connection pipe. According to the scouring prevention experiment device and method, the seepage extension process of the collapse column under a confined water function can be more truly simulated, the geologic features of surrounding rock around the collapse column under the confined water seepage function can be assisted in researching, and the reasonable setting of a coal pillar is protected.