PURPOSE: To improve the removing ability of working dust, gas, etc. by rotating the working liquid feed nozzle in a wire-cut discharge working machine toward the working direction and jetting the working liquid.

CONSTITUTION: When discharging a workpiece 2 by means of a wire electrode 1, working liquid feed nozzles 4, 5 are fixed on the rotary members 64, 64' then rotated by the motors 66, 66' to control the direction of the nozzles 4, 5. The direction of nozzles 4, 5 are aligned with the work feeding direction (tangential direction of the working path) by means of a controller 8. When jetting the working liquid from the rear of the wire electrode 1, discharge of working dust is improved while the flexure of the wire electrode is corrected to improve the working accuracy.