This study was to analyze the mechanism of shear deformation and yarn slippage in the 3D (Three Dimensional) carbon woven fabric. For this study three weaves orthogonal, layer to layer and angle interlock were tested in Kawabata shearing instrument and all the results were analyzed. The relationship between the shear load and shear angle was measured in both warp and weft directions. It is shown that the fabric having highly compact structure exhibits high shear rigidity and it can withstand high shearing load. The orthogonal weave has shown much higher shear rigidity as compared to other weave structures