This　paper　investigated　the　effect　of　temperature　and　the　size　of　original　particles　on　the　flocs　re-growth　capability　and　the　particles　removal　by　flocs　breakage　and　re-growth.　The　process　of　formation,　breakage,　and　re-growth　of　flocs　was　investigated　with　PDA　2000.　It　is　found　that　there　is　a　full　re-growth　of　broken　flocs　when　coagulating　in　charge　neutrality,　while　coagulating　in　sweep　coagulation,　the　break-up　process　of　flocs　displays　distinct　irreversibility.　The　lower　temperature　results　in　the　higher　re-growth　capability　of　broken　flocs,　and　the　reversibility　of　broken　flocs　formed　by　small　particles　is　lower　than　that　formed　by　big　particles.　The　residual　turbidity　after　re-growth　of　broken　flocs　is　significantly　lower　than　that　before　flocs　breakage,　which　was　little　influenced　by　temperature.　The　size　of　original　particles　has　positive　effect　on　the　discrepancy　of　residual　turbidity　before　and　after　breakage.　The　technology　can　be　used　for　the　surface　water　with　big　particles　and　low　temperature.