A pixel unit driving circuit, including: a light-emitting device, a driving transistor (DTFT), a first switching transistor, a second switching transistor, a third switching transistor, a fourth switching transistor, a first capacitor, and a second capacitor, wherein, the driving transistor (DTFT) includes a source, a drain and a gate, all of the first switching transistor, the second switching transistor, the third switching transistor include a gate, a first terminal and a second terminal, and the fourth switching transistor includes a source, a drain and a gate; the drain of the driving transistor (DTFT) is connected to a power supply; the gate of the first switching transistor is connected to a control line, the first terminal of the first switching transistor is connected to the power supply, and the second terminal of the first switching transistor is connected to the gate of the driving transistor (DTFT); the gate of the second switching transistor is connected to the control line, the first terminal of the second switching transistor is connected to the source of the driving transistor (DTFT), and the second terminal of the second switching transistor is connected to the source of the fourth switching transistor; the gate of the third switching transistor is connected to the control line, the first terminal of the third switching transistor is connected to one terminal of the light-emitting device, and the second terminal of the third switching transistor is connected to the source of the driving transistor (DTFT); the gate of the fourth switching transistor is connected to a scan line, the drain of the fourth switching transistor is connected to a data line, and the source of the fourth switching transistor is connected to the second terminal of the second switching transistor; one terminal of the first capacitor is connected to the gate of the driving transistor (DTFT), and the other terminal of the first capacitor is connected to the source of the fourth switching transistor; and one terminal of the second capacitor is connected to the source of the fourth switching transistor; the fourth switching transistor is a N-type Thin Film Transistor, TFT; and the first switching transistor and the second switching transistor have a polarity opposite to that of the third switching transistor; characterized in that the other terminal of the second capacitor is connected to the other terminal of the light-emitting device and to ground, and the driving transistor (DTFT) is N-type TFT. a light-emitting device, a driving transistor (DTFT), a first switching transistor, a second switching transistor, a third switching transistor, a fourth switching transistor, a first capacitor, and a second capacitor, wherein, the driving transistor (DTFT) includes a source, a drain and a gate, all of the first switching transistor, the second switching transistor, the third switching transistor include a gate, a first terminal and a second terminal, and the fourth switching transistor includes a source, a drain and a gate; the drain of the driving transistor (DTFT) is connected to a power supply; the gate of the first switching transistor is connected to a control line, the first terminal of the first switching transistor is connected to the power supply, and the second terminal of the first switching transistor is connected to the gate of the driving transistor (DTFT); the gate of the second switching transistor is connected to the control line, the first terminal of the second switching transistor is connected to the source of the driving transistor (DTFT), and the second terminal of the second switching transistor is connected to the source of the fourth switching transistor; the gate of the third switching transistor is connected to the control line, the first terminal of the third switching transistor is connected to one terminal of the light-emitting device, and the second terminal of the third switching transistor is connected to the source of the driving transistor (DTFT); the gate of the fourth switching transistor is connected to a scan line, the drain of the fourth switching transistor is connected to a data line, and the source of the fourth switching transistor is connected to the second terminal of the second switching transistor; one terminal of the first capacitor is connected to the gate of the driving transistor (DTFT), and the other terminal of the first capacitor is connected to the source of the fourth switching transistor; and one terminal of the second capacitor is connected to the source of the fourth switching transistor; the fourth switching transistor is a N-type Thin Film Transistor, TFT; and the first switching transistor and the second switching transistor have a polarity opposite to that of the third switching transistor; characterized in that the other terminal of the second capacitor is connected to the other terminal of the light-emitting device and to ground, and the driving transistor (DTFT) is N-type TFT.