The　development　of　alternative　anode　materials　to　achieve　high　lithium-ion　storage　performance　is　crucial　for　the　next-generation　lithium-ion　batteries　(LIBs).　In　this　study,　a　new　anode　material,　Zn-defected　GeZn1.7ON1.8　(GeZn1.7-xON1.8),　was　rationally　designed　and　successfully　synthesized　by　a　simple　ammoniation　and　acid　etching　method.　The　introduced　zinc　vacancy　can　increase　the　capacity　by　more　than　100%,　originating　from　the　additional　space　for　the　lithium-ion　insertion.　This　GeZn1.7-xON1.8　particle　anode　delivers　a　high　capacity　(868　mA　h　g(-1)　at　0.1　A　g(-1)　after　200　cycles)　and　ultralong　cyclic　stability　(2000　cycles　at　1.0　A　g(-1)　with　a　maintained　capacity　of　458.6　mA　h　g(-1)).　Electrochemical　kinetic　analysis　corroborates　the　enhanced　pseudocapacitive　contribution　and　lithium-ion　reaction　kinetics　in　the　GeZn1.7-xON1.8　particle　anode.　Furthermore,　X-ray　diffraction　(XRD)　and　X-ray　photoelectron　spectroscopy　(XPS)　analyses　at　different　electrochemical　reaction　states　confirm　the　reversible　intercalation　lithium-ion　storage　mechanism　of　this　GeZn1.7-xON1.8　particle　anode.　This　study　offers　a　new　vision　toward　designing　high-performance　quaternary　metallic　oxynitride-based　materials　for　large-scale　energy　storage　applications.