The　occurrence　of　preset　flaws　can　influence　the　mechanical,　physical　and　other　related　properties　of　rock　samples.　To　study　the　failure　characteristics　of　rock　samples　with　2D&3D　nonparallel　flaws,　the　Digital　Image　Correlation　and　Acoustic　Emission　technologies　are　employed　in　the　uniaxial　compression　test.　Test　results　indicate:　1)　Acoustic　emission　events　densely　gather　around　the　internal　3D　flaw,　accompanied　by　acoustic　(Acoustic　emission　rate,　amplitude　and　cumulative　counts),　optical　(strain　field)　and　mechanical　(stress　fluctuation)　responses;　2)　The　secondary　failures　mainly　reflect　in　two　ranges　of　AE　signal　frequency　(distributes　in　100-160　kHz　and　270-330　kHz,　and　reach　peak　amplitude　at　130　kHz　and　310　kHz),　and　the　proportion　of　lowfrequency　events　decreases　as　the　flaw　inclination　increases;　3)　Occurrence　of　b-value　sharp　change　is　commonly　no　later　than　the　AE　burst,　and　the　sudden　fall　of　b-value　is　possible　to　be　an　important　precursory　information　for　the　large　scale　secondary　failures　in　rock;　4)　The　appearance　time　of　internal　macro　cracks　is　earlier　than　the　surface　secondary　cracks　when　the　sample　contains　both　2D　and　3D　flaws,　and　it　is　difficult　to　build　the　spatial　correlation　between　them.