Deoxidizers, also known as deoxidizers or oxygen absorbers, are additives that can absorb oxygen and slow down food oxidation. They are a new product being used in food preservation. It is a group of chemical mixtures that are prone to react with free or dissolved oxygen. It is packed in sealed paper bags with a certain degree of breathability and strength, just like desiccant bags. It is sealed and packaged together with food in food bags to remove residual oxygen in the air, prevent food from discoloration, spoilage, and rancidity due to oxidation, and also inhibit the growth of mold, aerobic bacteria, and food pests. Deoxidizers are not only used to maintain food quality, but also for the preservation and rust prevention of grains, feed, drugs, clothing, fur, precision instruments, and other items.