Precambrian Earth evolution is full of features characterized as some unique rocks and structural types almost without analogues in Phanerozoic Earth, and has played a great role in the evolvement of the Earth history. This paper will generally review some basic characteristics of those special geology phenomena, indicating the possible causal relationship and space—time connection between them. Regarding the focus issue in Precambrian Earth evolution, advantages and disadvantages of different models are illustrated here. The first order tectonic model might have changed from plume tectonics resulting vertical motion to plate tectonics leading to horizontal motion in the history of Precambrian Earth evolvement. To check the existence of Plate tectonic in Precambrian, jadeitite and ruby might be a new class of mineral indicators. Based on the geometry relationship between and space—time evolution of Precambrian Cratons and Proterozoic Cratons, we come to a conclusion that the critical period could be 2.4~2.2Ga when the geodynamic model began to change, of which the Global snow event has no direct correlation with Supercontinent but with sea level, which could be caused by ocean slab subducting and sinking into the mantle. Since then, the crust rigidity also began to change.