PROBLEM TO BE SOLVED: To provide a medical device joint system which can be disposed with a good appearance in the case where a plurality of medical treatment devices such as a washing unit or a sterilization unit are installed.SOLUTION: In a system having a plurality of medical devices 10 including a washing unit or a sterilization unit, the medical devices 10 are disposed to face their fronts in the same direction and to have a clearance inbetween, and front panels 16 having the substantially same faces as those of the individual medical devices 10 are arranged in the clearances of the medical devices 10, respectively.SELECTED DRAWING: Figure 1