Disclosed is a connector cap which can suppress leakage of fluid, and a transfusion line connection apparatus for use with the connector cap. The connector cap includes a container having a first opening and a second opening； a seal member disposed in the first opening so as to separate the inside and the outside of the container, the seal member including an insertion passage formed therethrough whereby an injection tube of a male connector can be inserted from the outside to the inside of the container； and a hydrophobic filter which is disposed in the second opening.
