The present invention discloses an automatic liquor dispenser, which is used in the medical field. The liquor dispenser comprises a liquor-dispensing barrel A (26), a liquor-storing barrel B (27), a feeder (28) and a pipeline; wherein, the feeder (28) is connected with the liquor-dispensing barrel A (26); the pipeline connects the liquor-dispensing barrel A (26) with the liquor-storing barrel B (27); and the pipeline comprises electromagnetic valves (1 to 10, 15, 17 to 18), a quick tie-in (16), a liquor-dispensing pump (P1), a liquor-supplementing pump (P2), a liquor-supplying pump (P3), a water inlet (29), a water outlet (30), a disinfectant inlet (31), a dialysate outlet (32) and connecting pipes. The liquor dispenser, which can operate without human attendance, has the advantages of lowlabor intensity, high dispensed liquor concentration precision, aseptic operation procedure, automatic dispensing, time and labor saving and convenient use and realizes the automatic conveying of central dispensed liquor, the liquor dispenser and the pipeline can be thoroughly washed and disinfected, and moreover, because the liquor dispenser has a protection function to prevent circuit faults, the safety and reliability of the liquor dispenser are high.