Background:　Developing　facile　and　general　functionalization　strategies　to　improve　the　durability　of　covalent　organic　framework　(COF)　coatings　and　their　affinity　for　polar　targets　is　of　great　significance　for　solid-phase　microextraction　(SPME)　technology.Results:　In　this　work,　a　facile　and　general　amidation　strategy　was　developed　for　conversion　from　reversible　(imine)　to　irreversible　(amide)　linkages　in　COF　coatings.　After　the　amidation,　the　durability　of　the　obtained　amide-linked　covalent　organic　framework　(Am-P-COF)　coating　was　greatly　improved,　and　the　adsorption　efficiency　for　polar　aromatic　amines　(AAs)　was　also　significantly　increased.　Moreover,　this　strategy　is　also　applicable　to　the　amidation　of　other　two　COF　coatings,　showing　good　general　applicability.　The　obtained　Am-P-COF　coated　fiber　was　used　for　SPME,　and　then　coupled　with　gas　chromatography　tandem　mass　spectrometry　(GC-MS/MS)　to　detect　AAs.　Under　the　optimal　SPME　conditions　(extraction　temperature:　50　degrees　C,　extraction　time:　30　min,　stirring　rate:　600　rpm,　pH:　8,　NaCl　concentration:　5.0　mg　mL(-1),　desorption　temperature:　290　degrees　C　and　desorption　time:　10　min),　a　detection　method　for　trace　AAs　was　established.　The　established　method　possess　wide　linear　ranges　(0.5-500.0　ng　L-1),　good　correlation　coefficients　(0.9986-0.9993)　and　low　detection　limits　(0.1-0.5　ng　L-1).　Moreover,　the　established　method　had　also　been　successfully　applied　to　detection　of　trace　AAs　in　bottled　tea　beverage　and　plastic　bags　packed　tea　with　satisfactory　recoveries　(83.5　%-116.8　%).Significance　and　novelty:　This　research　provides　a　facile　and　general　pathway　for　increasing　the　durability　of　COF　coatings　and　affinity　to　the　polar　AAs.　The　detection　method　based　on　the　obtained　fibers　possesses　high　sensitivity,　satisfactory　reproducibility　and　good　precision.