A medical instrument set package includes a blood treating implement (medical instrument set) housed inside a packing material. The blood treating implement includes a plurality of bags, a blood collecting needle, and a filter, which are connected together by tubes. The packaging material (15) includes a packing material body (16) formed with an opening (17) therein for taking out a housed article. The packing material also has perforations (18) serving as a means for expanding the opening, and a lid (20) that closes the opening (17). An adhesive layer (22) is formed on the inner surface of the lid (20). A blood collecting needle (41), which is the medical instrument that is used first, is pasted to and held on the adhesive layer (22). The moment the lid (20) is removed to unseal the opening (17), the blood collecting needle (41) is made ready for servicing.
