PROBLEM TO BE SOLVED: To effectively reduce a risk of exposure of a dangerous medicine such as an anticancer agent.SOLUTION: A transfusion tube set 1 includes: a tube assembly 2 adapted for infusion administration of a dangerous medicine to a patient; a package 3 for storing the tube assembly 2 in a sterile condition; and a bag 5 removably attached to the package that has an openable/closable zipper 22 at the opening. The bag is adapted so that it stores at least the used tube assembly after the administration of the dangerous medicine, and is disposed of in a state that the zipper is closed. Since the tube assembly to which the dangerous medicine adheres can be disposed of as it is in a state that it is tightly sealed in the bag, the risk of exposure of the dangerous medicine can be effectively reduced.