Endogenous gibberellins (GAs) in the young leaves and xylem sap of tea plants (Camellia sinensis L.) were analyzed by GC-MS. The following GAs were identified by comparing their mass spectra and KRIs with those of authentic specimens: GA(9) and GA(20) in the leaves; GA(9), GA(12), GA(15), GA(20), GA(44), GA(51), and GA(53) in the xylem sap.