Screen　content　refers　to　image/video　generated　by　electronic　devices.　Existing　state-of-art　image/video　coding　standards　don＇t　exploit　the　anisotropic　features.　This　paper　proposes　an　adaptive　LZMA-based　coding　scheme　for　screen　content　to　achieve　better　coding　efficiency.　Adaptive　scanning　and　directional　matching　are　incorporated　into　LZMA　in　our　scheme.　Both　of　them　exploit　the　directional　correlations　in　screen　content　to　increase　the　matching　probability　of　LZMA,　and　thus　achieve　better　coding　performance.　Experimental　results　show　that　the　proposed　scheme　significantly　outperforms　existing　LZMA-based　coding　schemes　on　screen　content　coding