The invention relates to a high-power DC stabilized power supply for an intelligent drilling tool, comprising a rectification module, a main power module, an auxiliary power module, a control module,a high-frequency inversion module and a voltage-stabilized output module. By adopting a mode of series and parallel connection of switch modules, the problem of insufficient output power of the singleswitching power supply module is solved, and the design of a 300W high-power power supply is realized; by designing a load equalization circuit and a protection circuit, four 36V/2.5A parallel powersupplies are adjusted through the load equalization circuit, so that each power supply is evenly loaded, by setting an overvoltage circuit, an undervoltage circuit and a load protection circuit, the safety and stability of the intelligent drilling tool when working underground are realized; by designing the high-frequency inversion module and the voltage-stabilized output module, wireless transmission of electrical energy between shorting of the intelligent drilling tool is realized, the short-circuit installation steps are simplified, and the working efficiency is improved.