A medical image storage unit stores medical image. A medical image observation terminal adds interpretation information for medical image and the creator name for interpretation information to the supplementary information of medical image. A reference terminal obtains medical image from the medical image storage unit in order to display medical image. An evaluation management unit instructs the reference terminal to display an evaluation input screen for medical image to allow an evaluation to be entered if the interpretation information has been added to the supplementary information of medical image obtained in the reference terminal, and it then adds evaluation to the supplementary information of medical image stored in the medical image storage unit after receiving an input from the reference terminal and transmits evaluation to the destination for the evaluation that corresponds to the creator name added to the supplementary information of medical image.