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The possibility to achieve unprecedented multiplexing of light-matter interaction in nanoscale is of virtue importance from both fundamental science and practical application points of view.Cylindrical vector beams(CVBs)manifested as polarization vortices represent a robust and emerging degree of freedom for information multiplexing with increased capacities.Here,we propose and demonstrate massively-encoded optical data storage(ODS)by harnessing spatially variant electric fields mediated by segmented CVBs.By tight focusing polychromatic segmented CVBs to plasmonic nanoparticle aggregates,record-high multiplexing channels of ODS through different combinations of polarization states and wave-lengths have been experimentally demonstrated with a low error rate.Our result not only casts new per-ceptions for tailoring light-matter interactions utilizing structured light but also enables a new prospective for ultra-high capacity optical memory with minimalist system complexity by combining CVB's comnatibility with fiber Optics.