In　recent,　A　Markov,　Process　based　approach　has　been　proposed　to　effective　attacking　JPEG　Steganography,　and　the　experimental　works　had　demonstrated　that　scheme　has　outperformed　the　existing　steganalyzers　in　attacking.　JPEG　steganography.　To　improve　(fiat　original　Markov　Process　based　approach,　several　variants　based　that　scheme　has　been　proposed　and　experimented　including　using　JPEG　I-D　array,　Using　higher　order　difference　of　JPEG　DCT　coefficients,　using　inter-block　I-D　array　and　separating　the　DCT　coefficients　to　several　groups.　Support　vector　machines　(SVM)　are　utilized　as　classifier.　The　experimental　works　are　presented　to　demonstrate　that　using　intra-block　JPEG　2-D　array　and　second　order　difference　can　significantly　improve　detection　rate.