As from the 19th century, Khmer temples have raised a number of questions that are still of interest today, and how they functioned is not the least fascinating of them all. The monumental features and sizes of these foundations suggest that they housed continuous and diverse activities, similar to those of their Indian equivalents that are still active today. This study is especially concerned with the daily activities that went on from preangkorian to angkorian times. This thesis is based on an archaeological approach that aims at identifying the activities and celebrations conducted in these temples from the implements that they required. Nevertheless, the precious, recyclable or perishable nature of what belonged to the gods makes their discovery extremely rare. As a consequence, the sources of this study are essentially epigraphic Khmer documents that list long records of items. These lists are considered from two complementary angles. They first consist in a heritage that was carefully described not only to make it easier to use but also to protect it. How they are numbered, what they are composed of and how much they weigh are therefore a number of means to estimate how much they are worth and how to identify them. Furthermore, the objects used during the celebrations give an insight into the rites that were conducted in these temples. This study aims at putting them together as well as organizing them in the light of Indian ritual directions since their influence on Khmer religious celebrations are well-known. Finally, this research has lead to studying yet unpublished inscriptions which are not limited to listing manufactured goods. They give an insight into all that belonged to the gods and to tackle different ways in which these sanctuaries functioned.