The invention discloses a multi-rotor wind generating system with suspenders. The multi-rotor wind generating system comprises a lower tower 1, a rotary driving device 3, wind turbines, an upper tower 2, ropes and/or connecting rods 8, beams 6, a cabin frame 7 and the suspenders 9, wherein the rotary driving device is arranged between the upper tower and the lower tower; two sides of the upper tower are connected with one end of each beam; the outer end and the middle part of the uppermost beam are connected with the top of the upper tower through the ropes and/or the connecting rods; outer ends of adjacent beams are connected through the ropes and/or the connecting rods; middle parts of the adjacent beams are connected through the ropes and/or the connecting rods; the upper ends of the suspenders are fixedly connected with the lowermost beam; the cabin frame is arranged on the upper tower; the wind turbines are arranged on the upper tower; and the wind turbines are fixedly connected with the top of the upper tower, the beams, the cabin frame or/and the lower ends of the suspenders. The multi-rotor wind generating system has the advantages of long service life, small floor area, low installation and maintenance cost, high reliability, wide application range, no rotary driving device in a cabin, and low bearing overturning moment.