Odor corresponds to the human sense of smell, which is one of the five senses. Through digital odor technology, it is now possible to provide a more enhanced olfactory experience and assistance. This technology can be used for olfactory screening, olfactory rehabilitation training, sleep improvement, and emotional therapy. For example, by digitizing traditional Chinese herbs, they can be used for disease prevention and to improve physical health. In sleep scenarios, different herbal scents can be combined with sleep cycle theory to dynamically regulate and improve sleep using natural herbal odors.