The embodiment of the invention provides an electric axis driving system and an automobile. The electric axis driving system comprises a box body, a differential, a motor, a first multi-linkage planetary gear set, a first clutch and a second clutch, wherein the differential comprises a differential shell; the motor comprises a motor output shaft; the first multi-linkage planetary gear set comprises a first sun gear, a first planet carrier, a first gear ring and a second gear ring, wherein the cross sections of the first gear ring and the second gear ring are mutually in parallel, the first sungear and the motor output shaft are in anti-torque connection, and the first planet carrier and the differential shell are in the anti-torque connection; the first clutch comprises a first steel sheet and a first friction sheet, wherein the first steel sheet and the first friction sheet have an on-off function, the first steel sheet is fixed on the box body, and the first friction sheet is fixedly connected with the first gear ring; and the second clutch comprises a second steel sheet and a second friction sheet, wherein the second steel sheet and the second friction sheet have an on-off function, the second steel sheet is fixed on the box body, and the second friction sheet is fixedly connected with the second gear ring. By use of the electric axis driving system provided by the embodiment of the invention, an axial occupation space is reduced, and the structural compactness of the whole system is improved.