Eucalyptus oil is one of the most commonly used essential oils. With the increasing popularity of candies and chewing gum, one of the main uses of eucalyptus oil is as a food additive. Synthetic perfume has a new influence and clean appeal, which has a great impact on the cosmetics industry (e.g., Chemicalbook, such as toothpaste and oral cleaning products) and other household cleaning product industries, as well as the fragrance of perfume. Eucalyptus oil is also used as an antibacterial agent in the pharmaceutical industry, especially in the treatment of respiratory infections and other similar diseases.