Abstract: A power factor correction converter and a control method thereof are provided includes an interleaving control tube set, an interface to an alternating current power supply, a first inductor, a second inductor, a third inductor, a capacitor, a first bridge arm and a second bridge arm. Abridge arm includes a first switch tube and a second switch tube connected in series; The first bridge arm, the second bridge arm, and the capacitor are connected to each other in parallel; the alternating current power supply and the first inductor are connected in series, and the second inductor and the third inductor are connected in parallel, and then connected to the first inductor in series; the second inductor is connected to the first bridge arm, and the second inductor is connected to the second bridge arm; and the alternating current power supply and the first inductor are connected in series.