At present, it is generally acknowledged that EVs are secreted by almost all living cells including plant cells. [4] Compared with mammalian EVs, the research of plant EVs is still in its infancy. Increasing evidence has proved that plant cells are able to secret exosome-like vesicles or extracellular vesicles into apoplast space. [5] In the 1960s, using transmission electron microscopy (TEM), Halperin et al. for the first time observed and discovered multivesicular bodies (MVBs) fusing with the plasma membrane and releasing exosome-like vesicles into the cell wall area in carrot cell cultures. [6] Fifty years after this first discovery, Regenteet al. used a tissue-infiltration-centrifugation method and successfully separated exosome-like vesicles from apoplast washing fluids (AWF) of sunflower seeds. [5a] Following these discoveries, plant exosomelike vesicles or vesicle-like nanoparticles have been successfully isolated from many plant species, including ginseng, ginger, broccoli, bitter melon, oat, grape, grapefruit, lemon, blueberry, orange, sunflower seed, and Arabidopsis, etc. [5a,7] The efficient separation of PDVLNs from plant cells is still one of the challenges that need to be solved in the plant EV field. At present, two plant tissue pre-processing methods, namely tissue-disruption and tissue-infiltration centrifugation, have emerged as favorite methods used for vesicle separation from plant cells in the field. [5b,8] After tissue pre-treatment, most studies use ultracentrifugation or density gradient centrifugation for further PDVLN separation. [5a,9] In addition, novel separation methods are under development for PDVLNs, such as ultrafiltration, immunoaffinity capture, size-exclusive chromatography, etc. [5b,7j,10] However, it is still challenging to isolate specific PDVLN subtypes, due to the lack of generic or specific markers for PDVLNs and well-verified plant species antibodies. [4b,5b] The nomenclature of vesicles prepared by these methods is not standardized in existing references. Many terms were used, including "plant particles", "plant vesicles", etc. [7b,8b,10,11] To facilitate communication in the plant vesicle field, standardizing the nomenclatures is necessary. We thus propose to unify these nomenclatures into plant-derived vesicle-like nanoparticles (PDVLNs) in this review.PDVLNs share many similar physical characteristics to those of human-derived EVs, including features such as morphology, particle size, concentration, Zeta potential, etc. [2a,7b,e,11] To further elucidate the specific molecular mechanism of PDVLNs on Extracellular vesicles (EVs) are heterogeneous, phospholipid bilayer-enclosed biological particles that regulate cell communication by molecular cargo delivery and surface signaling. EVs are secreted by almost all living cells, including plant cells. Plant-derived vesicle-like nanoparticles (PDVLNs) is a generic term referring to vesicle-like nanostructure particles isolated from plants. Their low immunogenicity and wide availability make PDVLNs safer and mor...