The invention provides a water barrel used for a barreled water dispenser. The water barrel used for the barreled water dispenser comprises a hard outer barrel body and a soft liner. The hard outer barrel body comprises a barrel opening part, a barrel body and a base plate, wherein a top cover is connected to the barrel opening part, and a first water guiding opening allowing a water guiding pipeto be inserted therein is formed in the top cover; a mounting hole is formed in the center of the base plate, a mounting part is arranged around the mounting hole, and a bottom cover is detachably connected to the mounting part; and the mounting part is provided with an annular boss which protrudes inwards, and a plurality of air holes are formed in the bottom cover. The soft liner comprises a liner body, a liner head and a liner tail, wherein the liner body is made of a whole soft material; the liner body is clamped by an inner sleeve ring and an outer sleeve ring, so that the liner head is formed; the liner body is clamped by a sealing device, so that the liner tail is formed; and the liner head is inserted into the barrel opening part, and the liner tail is connected with the annular boss. According to the water barrel used for the barreled water dispenser, the soft liner is disposable, and the liner body cannot be reutilized.