Effect of the addition of a small amount of Ge on mechanical properties and fracture behavior of Cu₅₀Zr₄₃Al₇ (at.%) bulk metallic glass were studied. The Cu₅₀Zr₄₃Al₇ alloy has a surprising glass-forming ability (GFA), and the glassy rods up to 4 mm in diameter can be formed. Partial addition of Ge causes the crystalline phases precipitate in the glassy matrix of (Cu₅₀Zr₄₃Al₇)_100−x Ge_x (x = 0, 1, 2) rods with a diameter of 4 mm. In uniaxial compression, Cu₅₀Zr₄₃Al₇ bulk metallic glass exhibit high strength of 1692 MPa and very limited plasticity of 0.05%. When Ge increases from 0 to 2 at.%, the strength decreases, but plastic strain increases about 2.5%. Fracture surface and shear bands of samples were investigated by scanning electron microscopy (SEM).