This paper begins with the analysis of the spatial symbolic meaning of the archetypes of the “great mother” and “universal mountain (or tree)” in ancient Egyptian mythological texts. Through studying the origin and evolution of form, space, and structure of early burial buildings, the paper then identifies the specific forms of spatial archetypes in Upper Egypt and Lower Egypt in each historical period. On this basis, the paper suggests that, under the influence of the unique mixed theological concepts, the “myth-archetype” phenomenon symbolizes the complex evolution process in ancient Egyptian tomb architecture. Finally, the paper elaborates the multiple metaphors of the “myth-archetype” in the catacombs, the cenotaphs of the kings of Upper Egypt, and the Mastaba tombs in Lower Egypt.