The invention discloses a natural oxygen consumption modified atmosphere packaging technology. According to the technology, extracted red blood cells are semi-embedded through a microcapsule and then freeze-dried to prepare a natural deoxidizing agent, a natural deoxidizing agent pack and food are put into a packaging bag, reducing ferrous ions contained in the red blood cells in the natural deoxidizing agent consume oxygen in the packaging bag to restrain microbial growth, and then the storage period of the food is prolonged. Due to the fact that the natural deoxidizing agent is prepared from natural nontoxic and harmless substances and the deoxidizing process is moderate and efficient, the deoxidizing effect is good, the use safety of the deoxidizing agent is improved, and potential safety hazards caused by mistaken taking are effectively avoided. In addition, waste livestock blood can be effectively utilized by adopting the technology.