The invention relates to an intelligent alternating-current purification voltage-stabilizing power source. The power source comprises a power source input end arranged on a panel at the rear side of a box body, a first circuit board is connected to the rear side of a bottom bard inside the box body, a sampling circuit is electrically connected with the power source input end, a second circuit board is connected to the front side of the bottom bard inside the box body, a control panel is connected to the opening end at the front side of the box body in a matched mode, the control panel is provided with a single-chip microcomputer, a display panel is connected to the outer side of the control panel in a matched mode, the display panel is provided with a touch display, a third circuit board is arranged at the upper side of the second circuit board inside the box body, and a power source output end is arranged at the rear side of the box body. By means of the alternating-current voltage-stabilizing power source, the voltage of a power supply circuit can be monitored in real time, the single-chip microcomputer intelligently controls an adjusting circuit and decides whether to make precise adjustment on the voltage or not, the voltage stabilization range is large, the voltage stabilization speed is high, the anti-interference capability is great, and when the voltage in the circuits exceeds the upper limit, a protective circuit is utilized for protecting electric equipment.