Effects of Ramulus cinnamomi on fresh-keeping of Xinyu tangerine were investigated during storage at (5±1) ℃ and RH 85%~90%. The results showed that Ramulus cinnamomi extracts significantly reduced decay rate, weight loss rate and MDA content of fruits in comparison with the control group after 30~90 days cold storage. At the same time, the extracts treatment could also delay the degradation speed of total soluble solids (TSS), titratable acidity (TA), Vitamin C (V_C) and total sugar content, keep higher SOD, PAL, POD and PPO activities in comparison with the control group, which suggested that Ramulus cinnamomi extracts effectively maintain the postharvest quality and flavor of fruit and play a good role in the fresh-keeping of Xinyu tangerine.