We　propose　a　scheme　for　testing　the　small　violations　of　the　symmotrization　postulate　(SP)　for　photons　in　cavity　QED.　In　the　scheme,　a　degenerate　A-type　three-level　atom　is　sent　through　a　cavity　field　initially　in　a　q-deformed　coherent　state.　After　an　appropriate　interaction　time,　the　atom　is　measured　by　a　state-selective　detector.　The　probability　that　the　atom　makes　a　transition　from　one　of　the　lower　states　to　the　other　characterizes　the　violation　of　the　SP.　In　the　scheme,　only　one　atom　is　required　and　classical　fields　are　unnecessary,　which　is　prior　to　the　previous　schemes.　©　International　Academic　Publishers.