The scientists of university of Japanese Tokyo science and technology pass a test for many times, invented a kind of instrument, it can use the unique part of all sorts of odour below data logging through 15 sensor, mix about 96 kinds of chemical drug next, the means with distillation is reductive the odour of objective itself. Up to now, they are recorded already successfully and reductive the fruity fragrance such as Meng of He Ning of orange, apple, banana. This technology can use duplicate scent, OK also in digital world applying.