The deformation and fracture behaviors of 3D-net SiC/Zr-based amorphous composites have been investigated with the WDW-E100D testing machine and scanning microscopy （SEM） under monaxial compression at room temperature. It is found th compressive strength of the composites reaches 1 270 MPa. Under compressive loading, the matrix electron at, the samples exhibit elastic deformation followed by catastrophic failure without obvious yielding. The mode of failure of the composites is a mixture combining splitting and shear fracture. The 3D-net ceramic is the dominating cell bearing the weight; the microcosmic failure mechanical are typical cleavage fracture of 3D-net SiC, and inhomogenous flow deformation of amorphous alloys viscous flow traces, vein patterns and localized melting can be seen on the fracture surface of the amorphous alloys matrix.