A medical fluid container of the present invention includes a container main body which is integrally molded by a blow-fill-seal method, a rubber plug which is disposed on a top surface of a mouth portion of the container main body, and an outer frame material which covers the rubber plug and the mouth portion, and which has a receiving surface that the mouth portion touches, and has a pressure bonding portion pressed in a direction of a bottom portion of the container main body against the mouth portion, and the rubber plug includes a plug main body covering a part of the top surface of the mouth portion, and a flanged portion extended between the pressure bonding portion and the mouth protion from a lower outer circumference of the plug main body.
