As　a　novel　optical　device,　the　plasmonic　random　laser　has　unique　working　principle　and　emission　characteristics.　However,　the　simultaneous　enhancement　of　absorption　and　emission　by　plasmons　is　still　a　problem.　In　this　paper,　we　propose　a　broad-band-enhanced　plasmonic　random　laser.　Two-dimensional　silver　(Ag)　nanostar　arrays　were　prepared　using　a　bottom-up　method　with　the　assistance　of　self-assembled　nanosphere　templates.　The　plasmon　resonance　of　Ag　nanostars　contributes　to　the　pump　light　absorption　and　photoluminescence　(PL)　of　RhB.　Coherent　random　lasing　was　achieved　in　RhB@PVA　film　based　on　localized　surface　plasmon　resonance　(SPR)　dual　enhancement　and　scattering　feedback　of　Ag　nanostars.　Ag　nanostars　prepared　with　different　nanosphere　diameters　affect　the　laser　emission　wavelength.　In　addition,　the　random　laser　device　achieves　wavelength　tunability　on　a　flexible　substrate　under　mechanical　external　force.