The utility model relates to water level monitoring devices, in particular to a water level monitoring system for a mine. The water level monitoring system for the mine comprises a surface control room and a water level measurement instrument, wherein the surface control room comprises a digital panel meter and a soft start cabinet, and the digital panel meter is connected with a 220V power supply and is also connected with the soft start cabinet through a signal line; the water level measurement instrument is connected with the digital panel meter through a control line, a water measurement line is connected to the lower portion of the water level measurement instrument, and a sensor probe is installed at the tail end of the water measurement line. According to the water level monitoring system for the mine, operation is extremely stable, monitored data are accurate, the water measurement line is hung safely and reliably, the upper limit and the lower limit of the water level are effectively controlled, safe operation of an immersible pump is guaranteed, the water level monitoring system acts in linkage with the soft start cabinet of the immersible pump, so that automatic control over the water level is achieved, a worker on duty can conduct monitoring extremely conveniently, and labor intensity is relieved.