The invention belongs to the technical field of power frequency withstand voltage tests, and relates to a system and a method for testing intelligent power frequency withstand voltage of low-voltage electric equipment. The system is characterized in that a testing power supply, a protective switch, a voltage regulator, a choke inductor, a testing transformer and a tested member are successively connected; a display unit, a voice reminding unit, an IGBT driving unit and an operating panel are connected with a DSP processor; the IGBT driving unit, the IGBT and a motor are successively connected; the DSP processor, an isolating amplifying unit V, a voltage transformer and the testing transformer are successively connected; the DSP processor, the isolating amplifying unit A, the current transformer and the testing transformer are successively connected; a printer, an industrial computer, a communication unit and the DSP processor are successively connected. The system and the method realize related on-and-off capability testing such as centralized control and data automatic management, switching-on and switching-off and electric service life in a low-voltage DC switch testing process. Furthermore the system and the method have advantages of simple structure, convenient operation, high stability, high safety, high intelligence level, etc.