Abstract: Both observations of the tissue structure of citrus carpodermis irradiated with electronic beams and the storage effect during stockpiling period show that when the citrus fruit is treated at the dose of 0.5kGy, its tissue structure of carpodermis can maintain its normal status and waxy layer is thick; cells and spongy parenchyma cells in carpodermis arrange closely. When the dose is increased up to 3kGy, the fruits are destroyed seriously. During whole storage period, the decay rate of the treated fruits at 0.5kGy is lower that that of CK. Loss of weight is less (all of the fruits are plump and have fairly special flavour), and nutritive elements such as vitamin C, total acid and total sugar approach with CK.