Water level detection assembly and device

The utility model discloses a water level detection assembly and device, and relates to the technical field of water level detection equipment, the water level detection assembly comprises a water level measurement part and a ground support mechanism, the water level measurement part comprises a measurement carrier and a floating ball moving part arranged at the bottom of the measurement carrier, and both sides of the measurement carrier are provided with balloon inflation parts. When the balloon is used, the floating ball body can float on the water surface, when the water level rises, the sliding rod can drive the push rod to move upwards, the sealing piston is used for extruding and sealing air in the inflator pump, the balloon body is inflated through the connecting hose, and at the moment, the balloon body starts to gradually bulge; the rising degree of the water level can be roughly known through the inflation degree of the balloon body, when the water level exceeds the standard, the sealing piston just