The conservation of wooden objects is a complicated process, due to their response to changes in the surrounding environment. the authors were significantly interested in the condition of the Cheops' First Boat and the previous restoration, so this paper discusses the investigation of two wooden pieces of the boat that had been previously treated in the past, by characterizing the original materials and the materials added during the previous restoration using a number of scientific and analytical approaches to better understand the state of deterioration, in addition to the condition of the object and the previous restoration interventions, in order to facilitate the choice of the most appropriate cleaning and consolidating measures in the future, and to help conservators decide whether or not to remove the previous restorations, to establish suitable treatment methods, and to provide a deeper understanding of its materials and techniques of preservation as well as its' deterioration.