To provide a drink liquid supply device having a structure which is capable of supplying a liquid at a low cost and with ease, also prevents cost increases in liquid replenishment job and maintenance job, and, further, has no restrictions with regard to installation conditions.

This device selects and supplies one of different drink liquids. In this case, air is led into an air storage tank 8 by an air intake pump and stored under specific pressure required for discharging. The drink liquid is discharged from an extraction member 4 by opening and opening/closing cock 7 provided for a discharging member 4, inserted in a selected liquid storage body 3, or an air lead-in hose, thereby increasing pressure in the liquid storage body 3.