Abstract: To provide reference for the research and development of postharvest storage and preservation technology of passion fruit.,the effects of cold storage on postharvest fruit quality and active oxygen metabolism of passion fruit were discussed. The changes of fruit quality, superoxide anion radical（ \mathrmO_2^-\cdot ）production rate, malondialdehyde（ MDA ）content, peroxidase（ POD ）activity, superoxide dismutase（ SOD ）activity and catalase（ CAT ）activity of golden passion fruit during storage at room temperature（25±1）℃ and cold storage（4±1）℃ were studied. The results showed that compared with room temperature, the soluble solids, titratable acid, ascorbic acid, free amino acids and other indicators of passion fruit were relatively high and the changes were relatively slow under cold storage conditions. Cold storage could effectively delay the degradation of soluble proteins. There was no significant difference in solid-acid ratio between the two storage temperatures. Cold storage could inhibit the \mathrmO_2^-\cdot production of passion fruit, and the activities of SOD, POD and CAT were relatively stable at low temperature. The content of MDA was relatively low in the early stage of cold storage and higher in the later stage, but there was no significant difference between the treatments during the whole storage process. In summary, cold storage can slow down the consumption of sugar, acid and other substances in postharvest passion fruit to a certain extent, so as to maintain the flavor and quality of passion fruit. It can inhibit the \mathrmO_2^-\cdot production, delay the change of antioxidant enzyme activity, and improve the storability of passion fruit.