A drainage tube unit for aspirating body fluids by means of a suction pump comprises a drainage tube (10) for aspirating the body fluids and at least one service tube (11), each of them with a patient-side end and a pump-side end, the patient-side ends of the drainage tube (10) and of the service tube (11) being arranged in a common patient-side attachment part (3), and the pump-side ends of the drainage tube (10) and of the service tube (11) being arranged in a common pump-side attachment part (2). The ends of the drainage tube (10) extend separate from the ends of the service tube (11), the patient-side ends opening into a drainage channel (37) and a service channel (35) of the patient-side attachment part (3), and the pump-side ends opening into a drainage channel (24) and a service channel (25) of the pump-side attachment part (2). The drainage tube unit according to the invention is inexpensive to produce and is easy and safe to use.
