The invention belongs to the field of food processing processes, relates to methods for detecting toxins in solid-state food fermentation products and particularly relates to a method for extracting and purifying ochratoxin A from yeast for making hard liquor. The method comprises the following steps: (1) putting a certain amount of crushed yeast sample in a centrifuge tube, then, adding a certain volume of sample extracting solution, and violently oscillating on a vortex oscillator; (2) carrying out centrifugation by adopting a centrifuge; (3) obtaining supernatant, and filtering the supernatant through glass-fiber filter paper; (4) accurately measuring a certain volume of filtered liquid, putting the measured filtered liquid in a centrifuge tube, adding a chloroform reagent, violently oscillating on the vortex oscillator, and then, standing; (5) after delamination, putting a lower-layer chloroform phase in a centrifuge tube, and drying by blowing nitrogen gas at the temperature of 50 DEG C; (6) putting chromatographic-grade methanol in the centrifuge tube dried by blowing nitrogen gas, and violently oscillating to dissolve ochratoxin A. The method has the advantages of low cost, good effect, simplicity and easiness in operation and high extraction ratio.