To provide a vehicle for a travelling dental clinic which is easy-to-use and makes effective use of a space a treatment room.

A housing rack 11 or the like and a sink 14 are arranged on the front side of a treating room 4. A treating chair mount part 21 is provided on the rear side of the treating room 4 to mount a wheel chair 20. An opening part 6 is provided behind the treating room 4 while a lift table 8 is provided at the opening part 6. One end side of a side link arm 32 is rotatably mounted on the internal surface 4R of the treating room 4 and a dental treatment unit 35 is provided on the other end side of the side link arm 32. The side link arm 32 is so arranged to allow housing thereof along the internal surface 4R of the treating room 4. Since the side link arm 32 provided with the dental treatment unit 35 is mounted on the internal surface 4R of the treating room 4, so much space is not taken for the treating chair mount part 21. The side link arm 32 can be housed along the internal surface to allow movement from the lift table 8 to the treating room 4 without blocking it, thereby facilitating the mounting or dismounting of the wheel chair.