Electric drive assembly system comprising: a housing, lubricating oil being deposited at the bottom of the housing; a rotating shaft extending along a central axis and supported in the housing by means of a first bearing and a second bearing in a manner of being rotatable in a first rotation direction, the rotating shaft comprising a first end close to the deposited lubricating oil and supported by the first bearing and a second end opposite to the first end and supported by the second bearing; and a first gear arranged to mesh with the first end of the rotating shaft to rotate in a second rotation direction opposite to the first rotation direction, wherein the electric drive assembly system further comprises an oil collecting and guiding component, the oil collecting and guiding component comprising: a first inlet arranged near an outer edge of the first gear and configured to receive the deposited lubricating oil splashed when the first gear rotates, an outlet arranged close to the second end of the rotating shaft, the received lubricating oil leaving the oil collecting and guiding component through the outlet, and a guide portion which connects the first inlet and the outlet to guide the lubricating oil from the first inlet to the outlet, so as to lubricate the second bearing, comprising a second gear, the second gear being fixed to the rotating shaft to rotate with the rotating shaft, and the second gear being axially closer to the second end of the rotating shaft than the first gear, characterized in that the oil collecting and guiding component further comprises a second inlet, and the second inlet is arranged near an outer edge of the second gear and is configured to receive the lubricating oil splashed when the second gear rotates. a housing, lubricating oil being deposited at the bottom of the housing; a rotating shaft extending along a central axis and supported in the housing by means of a first bearing and a second bearing in a manner of being rotatable in a first rotation direction, the rotating shaft comprising a first end close to the deposited lubricating oil and supported by the first bearing and a second end opposite to the first end and supported by the second bearing; and a first gear arranged to mesh with the first end of the rotating shaft to rotate in a second rotation direction opposite to the first rotation direction, wherein the electric drive assembly system further comprises an oil collecting and guiding component, the oil collecting and guiding component comprising: a first inlet arranged near an outer edge of the first gear and configured to receive the deposited lubricating oil splashed when the first gear rotates, an outlet arranged close to the second end of the rotating shaft, the received lubricating oil leaving the oil collecting and guiding component through the outlet, and a first inlet arranged near an outer edge of the first gear and configured to receive the deposited lubricating oil splashed when the first gear rotates, an outlet arranged close to the second end of the rotating shaft, the received lubricating oil leaving the oil collecting and guiding component through the outlet, and a guide portion which connects the first inlet and the outlet to guide the lubricating oil from the first inlet to the outlet, so as to lubricate the second bearing, comprising a second gear, the second gear being fixed to the rotating shaft to rotate with the rotating shaft, and the second gear being axially closer to the second end of the rotating shaft than the first gear, characterized in that the oil collecting and guiding component further comprises a second inlet, and the second inlet is arranged near an outer edge of the second gear and is configured to receive the lubricating oil splashed when the second gear rotates.