The restoration of porcelain relics can only be completed through multiple processes. The parts restored may show different degrees of surface discoloration in just 1~3 years. In order not to affect exhibitions, discolored porcelain relics often have to be restored again. However, multiple restorations may cause some damage to porcelain relics. Using some traditional restoration materials for porcelains as study objects, we conducted analyses on material discoloration for the purpose of improving their durability. In our study, white porcelain plates were treated with traditional porcelain restoration methods and then subjected to various ageing treatments with:dry heat, wet heat and exposure to xenon lamp light. The samples were then characterized by color difference and glossiness. The results show that 1) tinted samples show the biggest color change and 2) the environmental factors causing discoloration are light and temperature. Therefore, restored porcelains should be kept at lower temperatures and away from light.