Abstract: In this paper, that organic matter-generated hydrocarbon is a chaos domain is presented as viewed from modern physics; the scientific intension of concept of micro and macro applied to hydrocarbon generation and accumulation from organic matter is enucleated in terms of Lagrange function; the sequence and the mode in which the proton bundles impact the kerogen cracking in terms of valence bond theory of quantum mechanics are explained; an expression for energy release from kerogen cracking on the basis of binding energy of chemical bonds and thermodynamics energy that is the total of all energy in the system is derived; the primary migration of hydrocarbon in forms of creeping flow under expansion and compression is discussed by using the work-heat transformation theory of Carnot's circular thermodynamics; the abnormal temperature and pressure generated and accumulated in deep sag during the work-heat transformation are described, which provide the heat sources for seal zones and the pressure gradient for secondary hydrocarbon migration, respectively. Finally, the properties and characteristics of the micro hydrocarbon generation and the macro hydrocarbon accumulation are analyzed in detail.

Key words: organic matter, micro hydrocarbon generation, macro hydrocarbon accumulation, energy release, abnormal temperature and pressure, hydrocarbon migration, seal zone