In　fluctuation-based　optical　nanoscopy,　investigating　high-density　labeled　subcellular　structures　with　high　fidelity　has　been　a　significant　challenge.　In　this　study,　based　on　super-resolution　radial　fluctuation　(SRRF)　microscopy,　the　joint　tagging　(JT)　strategy　is　employed　to　enable　fast　high-density　nanoscopic　imaging　and　tracking.　In　fixed　cell　experiment,　multiple　types　of　quantum　dots　with　distinguishable　fluorescence　spectra　are　jointly　tagged　to　subcellular　microtubules.　In　each　spectral　channel,　the　decrease　in　labeling　density　guarantees　the　high-fidelity　super-resolution　reconstruction　using　SRRF　microscopy.　Subsequently,　the　combination　of　all　spectral　channels　achieves　high-density　super-resolution　imaging　of　subcellular　microtubules　with　a　resolution　of　similar　to　62　nm　using　JT　assisted　SRRF　technique.　In　the　live-cell　experiment,　3-channel　JT　is　utilized　to　track　the　dynamic　motions　of　high-density　toxin-induced　lipid　clusters　for　1　minute,　achieving　the　simultaneous　tracking　of　many　individual　toxin-induced　lipid　clusters　spatially　distributed　significantly　below　the　optical　diffraction　limit　in　living　cells.