In　present　paper,　take　a　steel　frame　structure　with　single　degree　of　freedom　as　the　research　object,　a　series　of　experiments　were　carried　out　under　harmonic　excitation,　influences　of　additional　mass　ratio　of　particles,　particle　size,　the　roughness　of　the　bottom　of　the　container,　the　intensity,　and　frequency　of　the　excitation　were　studied.　The　experimental　results　show　that,　accumulation　state　is　a　key　factor　that　affects　the　performance　of　particle　damper,　with　the　increasing　of　added　mass　of　particles,　the　performance　of　the　damper　becomes　better　and　then　gets　worse.　Particle　size　has　little　effect　on　the　optimal　performance　of　particle　damper,　while　the　roughness　of　the　bottom　of　the　container　has　unremarkable　influence　on　the　performance　of　the　damper.　With　the　increase　of　the　excitation　intensity,　the　response　of　the　structure　with　particle　damper　decreases　and　tends　to　be　stable.　When　the　frequency　of　the　excitation　is　smaller,　the　response　of　the　structure　with　particles　is　likely　to　be　amplified,　while　when　the　frequency　of　the　excitation　is　larger　than　or　equal　to　the　natural　frequency　of　the　structure,　the　response　of　the　structure　decreases　greatly.　©　2017　American　Society　of　Civil　Engineers.