PURPOSE: To prevent sidle holes from being closed and to prevent a lumen from being closed when a tube is bent by forming a drainer tube of a tube body which is axially bored with plural recessed grooves on its outer peripheral wall and is axially provided with partition walls in its internal cavity and a coating tube which is fitted into this tube body and coats these recessed grooves.

CONSTITUTION: This drain tube is formed of the tube body 1 which is axially bored with the plural recessed grooves 2 on its outer peripheral wall and is axially provided with the partition walls 3 in its internal cavity and the coating tube 7 which is fitted into the tube body 1 and coats these recessed grooves 2. The whole or a part of the recessed grooves 2 are axially notched with lancing 4 arriving or not arriving at the internal cavity of the tube 1. The tubular wall at the rear end of the tube body 1 is bored with single or plural holes 5 arriving at the internal cavity from the outer periphery. As a result, the oozing fluid after an operation is adequately discharged outside the body even if the fluid is too much in amt. or exists in a wide range. Since the circumference of the patient is maintained clean, the operation is facilitated and the burden of the nursing person is lessened.