New ideas about the emergence and development of the Earth are presented on the basis of modern geochemistry and cosmochemistry data. The formation of the chemical composition of the Earth, the role of radioactive isotopes, the emergence of complex organic compounds, the differentiation of the mantle and the formation of the first igneous rocks, as well as the chemical evolution of the biosphere, ocean and atmosphere are considered. The questions of the chemical evolution of the earth's crust and its reflection in the evolution of metallogeny are presented using the latest data from the geochemistry of isotopes and chemical thermodynamics.