Epoxy resins are among the most commonly used bonding materials to be used in the field of national cultural relics protection. However, people have often found that the epoxy resins have some problems once aged:discoloration, embrittlement and peeling. In order to understand the aging mechanism of epoxy, to determine the influence of material composition, and to determine the optimal formula and environmental factors, a series of experiments were done. A generic epoxy resin as the main agent was taken and mixed with other components such as hardener and diluents and then made into a bonding material. Then the bonding material samples were exposed to environmental conditions that simulate extreme natural conditions. The aging process and mechanisms of the typical epoxy resin bonding materials deduced from repeated, cyclic destructive experiments are discussed.