The invention discloses a 90-degree cryoprobe trimming machine for a steel cord fabric cutting machine, comprising a frame beam. Both ends of the frame beam are symmetrically provided with a sliding plate which can slide relatively to the frame beam respectively; the sliding plate is connected with a power-driving device; the sliding plate is provided with a frontal roller and a back roller which are parallel to each other; wherein, the frontal roller is provided with a ring-shaped rolling cutter, while the back roller is provided with a underhole for arranging the rolling cutter at a place opposite to the rolling cutter; when in production, putting steel cord fabric through the gap between the frontal roller and the back roller; then adjusting the moment of a moment motor; and then driving the moment motor to rotate until the rolling cutter on the frontal roller and the underhole are close to the steel cord at both sides of the steel cord fabric; the moment motor can ensure both the rolling cutter and the underhole are always close to the steel cord at both sides of the steel cord fabric and guarantee the films at the verge of the steel cord are inconsistent in width, thus ensuring the quality of the steel cord fabric to reach the technological requirements; and the films cut automatically roll into a cylinder, which can be recycled after returning to a drawing process, thus saving cost.