The title compound (C30H32NO4PGe), O,O-dimethyl-N-(β-triphenylgermanyl) propionyl-α-aminobenzylphosphonates was synthesized by a convenient method, and its crystal structure was deternined by single-crystal X-ray diffraction. The crystal is triclinic, space group P1 with parameters: α=9.7753(5), b=11.5773(5), c=13.5059(6) A, α=104.185(1), β= 95.971(1),γ =96.727(1)° , V=1457.63(12) A3, Z=2, Mr=574.13, Dc=1.308 g/cm3, λ =0.71073 A, μ =1.1391nm-1, and F(000)=596. The structure was solved by direct methods. The structure was refined to R=0.0257, wR=0.0705 for 5080 observed reflections with Ⅰ＞2 σ(Ⅰ).The result of structure analysis indicates that atom Ge is sp3 hydridized because the arrangement of the four carbon atoms bonded to it is a distorted tetrahedron. The geometry of the three phenyl groups linking with the Ge aton looks like a propeller form.