The aims of this study was to investigate the impact of high barrier film packaging on quality and chlorophyll degradation of Brassica campestris L. Brassica campestris L. was packaged using three different high barrier films (P1， P2， and P3) and then stored at (4±1) ℃. The changes of phenotype， oxygen and carbon dioxide in the bags， color， nutritional quality and chlorophyll derivatives of Brassica campestris L. were analyzed. The results indicated that compared with the control group， the high barrier film packaging could slow down the quality deterioration and chlorophyll degradation of Brassica campestris L. The high barrier film P1 and P2 packaging could maintain the low O₂ and high CO₂ environment in the bag， significantly inhibit the increase of L， a and b， and slowed down the decrease of carotenoid， lutein， ascorbic acid and soluble protein contents. The content of chlorophyll derivatives (chlorophyll a， chlorophyll b， chlorophyllide a， chlorophyllide b， pheophorbide a and pheophytin a) was maintained at a high level， the total chlorophyll content was 0.37 mg/g and 0.40 mg/g higher than that of the control group at 30 days of shelf life， respectively. thus delaying leaf yellowing and senescence. In general， high barrier films P1 and P2 could maintain high quality of Brassica campestris L.， inhibit chlorophyll degradation and prolong the storage life for more than 15 days.