Extracellular vesicles (EVs) are a general term for various vesicles with a lipid bilayer membrane structure that are released under resting or stress conditions. The diameter of the vesicles ranges from tens of nanometers to several micrometers. Studies have found that extracellular bodies are involved in a variety of physiological processes in the body and are associated with a variety of pathological processes such as infectious diseases and inflammation, nervous system diseases and cancer. Therefore, extracellular vesicles can be used to monitor disease progression, therapeutic response, and the like. At the same time, because of their ability to deliver bioactive substances, it can also be used as a new nano…