The invention provides a novel multi-wire cutting mechanism with variable axial spacing, which comprises a rack, a first wire roller, a second wire roller, a third wire roller, a fourth wire roller and a rotor, wherein the first wire roller, the second wire roller, the third wire roller and the fourth wire roller are respectively driven by four servo motors, the rotor is provided with a fifth wire roller, a sixth wire roller and a seventh wire roller, and the connecting lines of the centers of the fifth wire roller, the sixth wire roller and the seventh wire roller form a triangle; a containing space is formed in the first wire roller, the second wire roller, the third wire roller and the fourth wire roller, and the fifth wire roller, the sixth wire roller and the seventh wire roller are all located in the containing space. The cutting wire net is supported and wound by any two of the first wire roller, the second wire roller, the third wire roller, the fourth wire roller, the fifth wire roller, the sixth wire roller and the seventh wire roller. And the rotor is rotated, so that two different wire rollers in the fifth wire roller, the sixth wire roller and the seventh wire roller serve as working wire rollers to support the lower flat cable net to participate in material cutting, the center distance between the wire nets of the left cutting area and the right cutting area is adjusted, and two different workpieces can be cut at the same time.