The　dynamic　compaction　is　a　common　technology　for　ground　treatment.　Based　on　the　tests　on　dynamic　compaction　vibration　at　test　site　of　ground　treatment　project　of　a　company＇s　second　stage　filled　area,　the　attenuation　relation　between　acceleration　of　dynamic　compaction　vibration　and　measuring　point　distance　is　analyzed.　While　the　attenuation　relation　between　speed　of　dynamic　compaction　vibration　and　measuring　point　distance　is　also　analyzed.　The　relation　between　level　of　dynamic　compaction,　vibration　acceleration　and　speed　at　measuring　points　are　studied.　The　relation　between　number　of　compacting,　vibration　acceleration　and　speed　at　measuring　points　are　also　studied.　The　roles　of　vibration　isolation　trenches　are　evaluated.　The　test　site　is　divided　into　different　vibration　coverage　zones　(vibration　vulnerable　zone,　basic　safe　zone,　safe　zone)　according　to　corresponding　standards.　The　grounds　and　structures　of　buildings　are　combined　to　put　forward　the　proposals　for　construction　and　improvement　of　dynamic　compaction.