PURPOSE: To obtain a blood storing container without foam generation by providing a drug solution pathway through which a drug solution which is derived through a drug solution guided by the pathway in the drug solution introducing part flows into the lower part of the blood storing container by flowing down the inner wall without dripping down.

CONSTITUTION: In the lower part of a drug solution injecting port 5, a drug solution introducing part forming means 6 is set by fixing interiorly inside the drug solution introducing part, showing a suspended form. A drug solution introducing part 4 which is a space surrounded by the drug solution introducing part forming means 6, the inner surface of the lid 8 and the inner surface of a housing 9 is formed in the upper part of a blood storing container 1. By installing a drug solution introducing part 4, drug solutions of various drugs such as vasodilators which flow in via the drug solution introducing port 5 comes in contact with the drug solution introducing means 6 without directly dripping down into the blood storing container, with a part of it retained in the drug solution introducing part. The drug solution flows out gradually from the drug solution flowing way 7 which is a narrow way. The drug solution flowing out of the drug solution pathway 7 flows down towards the lower space of the blood storing container 1 by flowing down along the inner surface of the housing 9.