This medical fluid container includes: a container body integrally molded by a blow-fill-seal method; a rubber stopper disposed on a zenith plane of a mouth of the container body; and an external frame to be positioned over the rubber stopper and the mouth, the external frame having a receiving face on which the mouth abuts and having a crimped part crimped toward the bottom of the container body with respect to the mouth. The rubber stopper includes: a stopper body that covers a portion of the zenith plane of the mouth; and a flange part that extends between the crimped part and the mouth from a bottom circumference of the stopper body.
