AuniquemethodoffabricatingPS/AuNPscompositeparticlesinexsitumodeisproposedonthebasisofthermodynamicallydrivingmechanism.ItisfacileandversatileasiteliminatestheneedforsurfacefunctionalizationsandmodificationsofbothPSmicrospheresandAuNPs.ThePS/AuNPscompos