A drainage tube including: a conduit member 10 which has a first end 12, a second end 14, and a drainage passage 16 disposed between the two ends, the first end being inserted into a diseased part of a Bartholins duct abscess through an incision a first wing member 20 which is provided on an outer circumference at a side of the first end and prevents the conduit member inserted into the diseased part from being separated and a second wing member 30 which is provided on the outer circumference at a side of the second end and restricts the depth to which the conduit member is inserted into the diseased part, from the diseased part while the incision heals. The drainage tube may be removed after the incision heals and a drainage opening, which corresponds to the outer circumference of the conduit member is created.
