Ferroelectric　materials　have　great　potential　applications　in　non-volatile　ferroelectric　random　access　memories　because　of　the　singularity　of　one-dimensional　topological　defects.　In　this　paper,　we　have　found　for　the　first　time　the　atomic-level　dipole　rotations　of　vortex　structures　in　crystalline　materials.　By　the　aberration-corrected　high　resolution　scanning　transmission　electron　microscopy　(STEM),　the　atomic-scale　multiple　rotation　domains　and　polar　vortices　in　Na0.5Bi0.5TiO3　(NBT)　grains　have　been　clearly　observed　in　lead-free　perovskite　NBT.　Meanwhile,　nanobeam　electron　diffraction　experiments　provided　the　strong　evidences　of　the　coexistence　of　tetragonal,　orthorhombic　and　rhombohedra　phases　at　room　temperature.　These　polar　vortices　are　constructed　by　the　competition　of　these　atomic-scale　polar　domains,　which　are　originated　from　the　multiphase　coexistence　of　NBT　and　can　be　well　confirmed　by　our　theoretical　calculations.　These　observations　have　put　forward　new　implications　for　the　creation　of　vortex　topologies　in　crystalline　materials　without　sophisticated　thin-film　technologies,　and　it　can　also　help　to　understand　the　complicated　polar　mechanism　in　lead-free　perovskite　ferroelectric　materials.