Abstract: In both atomic physics and modern physics，the determination of atomic ground states is involved in different degrees. This is a relatively complex problem，since there are many physical principles involved. The determination of the atomic ground state is of great significance to the study of the atomic shell structure. This paper gives a theoretical basis and a simple method to determine the atomic ground state，which is used to solve the atomic state formed by electron configuration for several types of atomic ground states.

Key words: atomic ground state, Pauli exclusion principle, electronic configuration, Hund's rules, the lowest energy principle