An endoscope sterilizing test pack (1) includes an indicator (23) for checking a sterilization effect of sterilization treatment, an inner case (3) having an open/close mechanism (fitting member (20), ferrule (19)) which can insert /remove the indicator (23) into/from the inner case, first and second tubes (22A, 22B) substantially hermetically connected to the inner case (3) so that one ends are open at ends of first and second flexible pipes (4A, 4B), respectively, and another ends are communicated to an inside of the inner case (3), an outer case (2) housing the first and the second tubes (22A, 22B) and the inner case (3), and the first and the second flexible pipes (4A, 4B) substantially hermetically connected to the respective ends of the outer case (2) and housing the first and the second tubes (22A, 22B), respectively.
