In　order　to　improve　the　quality　and　efficiency　of　video　coding　and　decoding,　it　is　of　great　significance　to　select　a　suitable　loop　filter　scheme.　In　this　paper,　an　adaptive　scheme　based　on　content　is　promoted,　with　several　elements　taken　into　consideration,　which　includes　the　correlation　between　two　macroblocks,　the　average　value　of　motion　vector　in　macroblock,　the　different　level　of　QP　value　and　the　difference　between　two　pixels　values.　All　of　these　elements　are　colligated　based　on　the　statistical　result　of　the　video　test　and　taken　as　the　judgment　criterion　for　strength　of　loop　filter.　The　experimental　results　indicate　that　this　method　is　good　for　improving　the　efficiency　of　video　coding.　©　2003　IEEE.