In　this　paper,　with　the　aid　of　superimposing　technique　and　the　Pseudo　Traction　Method　(PTM),　the　interaction　problem　between　an　interface　macrocrack　and　parallel　microcracks　in　the　process　zone　in　bimaterial　anisotropic　solids　is　reduced　to　a　system　of　integral　equations.　After　the　integral　equations　are　solved　numerically,　a　conservation　law　among　three　kinds　of　J-integrals　is　obtained　which　are　induced　from　the　interface　macrocrack　tip,　the　microcrack　and　the　remote　field,　respectively.　This　conservation　law　reveals　that　the　microcrack　shielding　effect　in　such　materials　could　be　considered　as　the　redistribution　of　the　remote　J-integral.