The invention discloses a smart office system based on a Kinect technology. The system is characterized in comprising an office table (1), a notebook computer holder (2), a position adjusting device capable of adjusting a horizontal height and a rotating angle, a Kinect sensor (3) and a controller. The position adjusting device and the Kinect sensor (3) are mounted on the office table (1). The notebook computer holder (2) is mounted on the position adjusting device. The position adjusting device and the Kinect sensor (3) are electrically connected with the controller. According to the office system, the horizontal height and angle of the notebook computer holder can be adjusted flexibly according to a sitting posture of a user, so the user can keep the right sitting posture to use the notebook computer.