Efficient sample diluting device

The utility model discloses an efficient sample diluting device which comprises a diluting bottle, a stirring device and a driving unit, an air sprinkler is arranged in the diluting bottle and divides an inner cavity of the diluting bottle into an upper chamber and a lower chamber, the upper chamber is respectively communicated with an air tap and a first liquid inlet, and the lower chamber is communicated with a second liquid inlet. The lower cavity is communicated with the second liquid outlet and the third liquid outlet, a plurality of through holes are formed in the air sprinkler and all avoid the air outlet of the air nozzle, so that air exhausted from the air outlet is prevented from directly entering the lower cavity through the through holes, and liquid entering the dilution bottle through the first liquid inlet can enter the lower cavity through the through holes under the action of self weight. The stirring device is arranged in the lower cavity and can stir the liquid under the action of the drivin