Based　on　Brazilian　Split　test　and　uniaxial　compressive　test　for　standard　marble　samples,　the　influence　of　the　loading　form　on　the　distribution　of　rock　fragments　is　discussed.　Test　results　show　that　size　distribution　of　rock　fragments　between　0.5-20.0　mm　in　Brazilian　Split　test　is　a　fractal　structure　with　an　average　fractal　dimension　value　of　1.9761.　A　dual　self-similar　characteristic　is　revealed　in　uniaxial　compressive　test,　that　is,　the　size　distribution　of　rock　fragments　during　the　two　ranges　of　0.1-1.0　mm　and　2.0-40.0　mm　is　also　a　fractal　structure,　the　two　corresponding　average　fractal　dimension　values　are　2.1350　and　1.5499.　And　the　fractal　dimension　values　rise　with　the　increase　of　uniaxial　compressive　strengths　but　are　not　closely　related　to　the　tensile　strength　due　to　the　marbles＇　anisotropy.　The　fractal　dimension　value　of　sample　fragments　is　also　the　appropriate　indication　of　the　loading　form,　by　introducing　the　equivalent　probability　formula,　a　satisfying　analysis　is　given.