PROBLEM TO BE SOLVED: To provide a connector cover for achieving a connector in which connection is hardly released and which gives no pain to a patient.SOLUTION: A connector cover 1 for covering a male side connector 3 attached to a transfusion tube 2 includes a hollow cylindrical body 4 slidable along the transfusion tube 2 inserted inside. The rear end side of the cylindrical body 4 configures a support part 6 having an inner diameter suitable for supporting the cylindrical body 4 and sliding on the transfusion tube 2 when sliding along the transfusion tube 2 and the tip side of the cylindrical body 4 configures a cover part 5 becoming a state of covering the side surface of the male side connector 3 by fitting the male side connector 3 from the base end side. The cylindrical body 4 is made of a soft material.
