The invention provides a delayed illumination driving circuit for an LED. The circuit is characterized in that the circuit comprises a rectifying circuit, a power factor correction (PFC) circuit and a PFC backup circuit which are in series connection sequentially, wherein the rectifying circuit is used for rectifying an alternating current power source and supplying the PFC circuit with direct current. When the PFC circuit operates normally, a power-factor correction function is achieved, and output voltage is stable, the power factor-corrected power source is supplied to the PFC backup circuit. The PFC backup circuit supplies a load with a current path. According to the delayed illumination driving circuit of the invention adopted, the reliability of power supply of the circuit is improved; the PFC backup circuit is provided for the PFC circuit, the PFC circuit and the PFC backup circuit are connected in series, and therefore, when the PFC circuit operates normally, the PFC circuit is used for realizing the power factor correction function, and the PFC backup circuit is only used for providing the current path; and when the PFC circuit malfunctions, the PFC circuit is only used for providing the current path, the PFC backup circuit is used for stabilizing the output voltage.