The invention discloses an atomic fusion power supply topological structure of a centralized power supply. The maximum superconducting coil loads Lm~Lm+h power supplies in a fusion reactor coil is composed of a shared power supply S* and Sm~Sm+h power supplies. The Sm~Sm+h power supplies are individually independent and serves as a regulating power supply. Each power supply can output a bipolar current and voltage and have currents that can be regulated as required. The voltage range regulated by the Sm~Sm+h power supplies which serve as a regulating power supply does not exceed a rated voltage. The shared power supply S* has a voltage regulating range of the rated voltage minus the voltage of the regulating power supply. The novel topological structure of the atomic fusion power supply can reduce the total installed capacity of the atomic fusion power supply, reduce installation setups and manufacturing cost of devices.