Some problems may happen to the aluminum foil packages for nuts such as package leakage, delaminaion of composite film or low sealing performance, which may cause quality problems of the products within the shelf life. Therefore, it is necessary to monitor the key properties of the packaging materials and improve the manufacturing craft to ensure the quality of the packages for nuts. Aluminum-foil packages made of three different materials with different thickness were used in the comparative tests. The oxygen permeability, peeling strength, high temperature resistance, heat sealing strength and sealing performance were compared after flex durability tests of the three test specimens. The key properties of Specimen No.1 were all good, Specimen No.2 showed poor flex durability while Specimen No.3 was of bad quality. The nuts manufacturers should take the product features, shelf life, storage conditions and other factors into consideration when selecting aluminum-foil packaging materials. The thickness, quality of composite layers and heat sealing technique should be emphasized and the performance of the packages should be monitored so that the proper packaging materials with good oxygen barrier property, physical and mechanical strength as well as sealing performance can be used.