We suggest the 3D user interface of the non-contact using the hand gesture in the field of the human computer interaction. Move a hand and measure information of the movement with various sensors and make a model on a computer and really reproduce it. Recognize the form of the finger using a bending sensor in this study. Set a hand gesture by the above. Perform image processing and acquire the information of the X-Y coordinate with using an infrared camera and infrared LED. The z-coordinate measures the distance between the screen and sets it with using a supersonic wave sensor.