An　analytical　method　for　simultaneous　determination　of　phenolic　acid　compounds　(free　phenolic　acids,　free　phenolic　acid　esters,　bound　phenolic　acids,　soluble　phenolic　acid　glycosides　and　insoluble　phenolic　acid　glycosides)　in　tea　samples　was　established　by　ultra-high　performance　liquid　chromatography-tandem　mass　spectrometry　(UPLC-MS/MS).The　free　phenolic　acids　in　samples　were　extracted　with　70%　methanol,　and　the　extract　was　hydrolyzed　with　2　mol/L　NaOH　solution　(containing　1　g/100　mL　ascorbic　acid　and　10　mmol/L　EDTA)　and　1　mol/L　HCl　solution,　separately,　to　release　free　phenolic　acid　esters　and　soluble　phenolic　acid　glycosides,　respectively.　The　reside　after　extraction　was　hydrolyzed　by　alkali　and　acid,　separately,　to　release　bound　phenolic　acid　and　insoluble　phenolic　acid　glycosides.　The　calibration　curves　for　the　23　phenolic　acid　compounds　showed　good　linearity　in　the　range　of　50-1　000　μg/L,　with　correlation　coefficients　(r)　higher　than　0.996,　and　the　relative　standard　deviation　was　less　than　8.84%.　The　recoveries　of　free　phenolic　acids　in　tea　samples　were　71.14%-105.43%,　and　the　recoveries　of　free　phenolic　acid　esters　and　soluble　phenolic　acid　glycosides　were　82.81%-108.93%　and　39.09%-102.25%,　respectively.　Fourteen　phenolic　acid　compounds　were　identified　in　tea,　with　a　total　content　ranging　from　7.84　to　12.90　mg/g.　©　2022,　China　Food　Publishing　Company.　All　right　reserved.