A food cutting device, comprising a housing and a cutting mechanism, wherein a feeding port is formed in one side of the housing; a discharging port is formed in the other side of the housing; the cutting mechanism comprises a cutting portion and a push-pull portion for controlling reciprocating movement of the cutting portion; the cutting portion comprises a sliding component, a first cutter and a plurality of second cutters; the sliding component is slidably connected with the housing; the first cutter and the second cutters are located on the side of the sliding component close to the feeding port, and are detachably connected with the sliding component; and the first cutter is parallel to a sliding direction of the sliding component, and is not parallel to the second cutters; wherein the food cutting device is characterized in that: the food cutting device further comprises a first compression spring, wherein a slideway is arranged on the inner wall at the lateral side of the housing; a protrusion is arranged at the lateral side of the sliding component; a sliding hole is formed in the protrusion; the first compression spring sleeves the slideway; the slideway passes through the sliding hole which slidably cooperates with the slideway; and two ends of the first compression spring are fixedly connected with the protrusion and the bottom wall of the housing, respectively; the push-pull portion comprises a push-pull rod; a first through hole is formed in the upper end of the housing; the push-pull rod passes through the first through hole to be rotatably connected with the sliding component, and slidably cooperates with the first through hole; a sliding chute is formed in the lateral side of the push-pull rod; a flange is arranged at the first through hole of the housing, and slidably cooperates with the sliding chute; a limiting groove is formed in the upper part of the sliding chute, and is communicated with the sliding chute; and the flange is capable of entering the limiting groove; the second cutters comprise a first cutting group and a second cutting group; the first cutting group comprises a plurality of first cutting blades; the second cutting group comprises a plurality of second cutting blades; and the first cutting blades and the second cutting blades are alternately arranged; wherein the food cutting device further comprises a sliding block, wherein a sliding groove is formed in each of the two sides of the sliding component, and is perpendicular to the slideway; the sliding block slidably cooperates with the sliding component through the sliding grooves; the first cutter is connected with the sliding component; and the second cutters are connected with the sliding block; the food cutting device further comprises a second compression spring and a first threaded component; a second through hole is formed in the sliding component; a threaded hole is formed in the sliding block; the first threaded component passes through the second through hole and is in threaded fit with the threaded hole; and the second compression spring is located between the sliding block and the sliding component; wherein a distance between the sliding block and the sliding component can be changed by rotating the first threaded component. the food cutting device further comprises a first compression spring, wherein a slideway is arranged on the inner wall at the lateral side of the housing; a protrusion is arranged at the lateral side of the sliding component; a sliding hole is formed in the protrusion; the first compression spring sleeves the slideway; the slideway passes through the sliding hole which slidably cooperates with the slideway; and two ends of the first compression spring are fixedly connected with the protrusion and the bottom wall of the housing, respectively; the push-pull portion comprises a push-pull rod; a first through hole is formed in the upper end of the housing; the push-pull rod passes through the first through hole to be rotatably connected with the sliding component, and slidably cooperates with the first through hole; a sliding chute is formed in the lateral side of the push-pull rod; a flange is arranged at the first through hole of the housing, and slidably cooperates with the sliding chute; a limiting groove is formed in the upper part of the sliding chute, and is communicated with the sliding chute; and the flange is capable of entering the limiting groove; the second cutters comprise a first cutting group and a second cutting group; the first cutting group comprises a plurality of first cutting blades; the second cutting group comprises a plurality of second cutting blades; and the first cutting blades and the second cutting blades are alternately arranged; wherein the food cutting device further comprises a sliding block, wherein a sliding groove is formed in each of the two sides of the sliding component, and is perpendicular to the slideway; the sliding block slidably cooperates with the sliding component through the sliding grooves; the first cutter is connected with the sliding component; and the second cutters are connected with the sliding block; the food cutting device further comprises a second compression spring and a first threaded component; a second through hole is formed in the sliding component; a threaded hole is formed in the sliding block; the first threaded component passes through the second through hole and is in threaded fit with the threaded hole; and the second compression spring is located between the sliding block and the sliding component; wherein a distance between the sliding block and the sliding component can be changed by rotating the first threaded component.