Nano-silver particles were prepared using the extract of citrus peels were added to chitosan solutions with weight ratios of 0.5%, 1.0%, and 2.0%, separately, as the composite coating solutions. Eggs were coated two times by the neat chitosan solution and composite coating solutions, separately, and was designated as CS, CS/Ag 0.5, CS/Ag 1.0, and CS/Ag 2.0, accordingly. They were stored with the two control groups (untreated eggs (CK1) and eggs washed by water (CK2) at 25 ℃ with the relative humidity of 70%. The appearance of internal content, weight loss, air cell height, specific gravity, albumen pH, Haugh unit (HU), yolk index (YI), total plate count of internal content and the micro-morphologies of the egg outer-shells were measured regularly during the storage. The results showed that, the coated eggs presented low weight loss and air cell height, stable albumen pH, high values of specific gravity, HU and YI when coated with 1.0% nano-silver. Furthermore, it was found that the composite coating containing nano-silver could effectively inhibit the microbial growth in the internal content of eggs, and stabilized the structure of coating resulting in enhanced durability of preservation effects. Therefore, the shelf life of CS/Ag 1.0 was as long as 79 days at 25 ℃, which was at least 34 days longer than that of CS, and 69 days longer than those of CK1 and CK2.