The invention provides a high-efficiency and high-power phase-shifted full-bridge zero-voltage soft switching circuit. The high-efficiency and high-power phase-shifted full-bridge zero-voltage soft switching circuit comprises a leading bridge arm, a lagging bridge arm, a first clamping diode, a second clamping diode, a main power transformer, a DC isolation capacitor, a full-wave rectification circuit and a resonant network, wherein the leading bridge arm comprises a first main power tube, a third main power tube, a fifth main power tube and a seventh main power tube, the lagging bridge arm comprises a second main power tube, a fourth main power tube, a sixth main power tube and an eighth main power tube, the first main power tube is connected in parallel with the fifth main power tube, the third main power tube is connected in parallel with the seventh main power tube, the second main power tube is connected in parallel with the sixth main power tube, and the fourth main power tube is connected in parallel with the eighth main power tube. By the high-efficiency and high-power phase-shifted full-bridge zero-voltage soft switching circuit, the loss of the main power tubes can be effectively reduced, the degree of achieving a zero-voltage soft switch by the lagging bridge arm is improved, the volume of the main power transformer is reduced, the problem of serious heat generation of a rectification filter circuit of a secondary side is solved, and the overall efficiency can be effectively improved.