A wire electric discharge machine which comprises: a machining tank having therein an electric discharge machining part configured to perform electric discharge machining of a workpiece by means of a wire electrode; a dirty tank in which a machining fluid in the machining tank is collected and stored; a filtration filter configured to filter machining chips of the workpiece and the wire electrode generated by the electric discharge machining from the machining fluid in the dirty tank and supply the filtered machining fluid to a clean water tank; a sealing portion configured to prevent the machining fluid from flowing out of the machining tank through an opening in the machining tank; a feed water pump configured to deliver the machining fluid in the clean water tank to the sealing portion; a nozzle through which the machining fluid is jetted against the workpiece during the electric discharge machining; and a machining fluid pump configured to deliver the machining fluid in the clean water tank to the nozzle; characterized in that the wire electric discharge machine further comprises: a measurement unit (10b, 13, 14) configured to measure the flow rate of the machining fluid delivered to the nozzle; a flow rate storage unit stored with the flow rate of the machining fluid delivered to the sealing portion in association with the flow rate of the machining fluid delivered to the nozzle; a flow rate setting unit configured to read the flow rate of the machining fluid delivered to the sealing portion from the flow rate storage unit and set the read flow rate, based on the flow rate measured by the measurement unit; and a flow rate control unit configured to control the flow rate of the machining fluid supplied to the sealing portion based on the flow rate set by the flow rate setting unit. a machining tank having therein an electric discharge machining part configured to perform electric discharge machining of a workpiece by means of a wire electrode; a dirty tank in which a machining fluid in the machining tank is collected and stored; a filtration filter configured to filter machining chips of the workpiece and the wire electrode generated by the electric discharge machining from the machining fluid in the dirty tank and supply the filtered machining fluid to a clean water tank; a sealing portion configured to prevent the machining fluid from flowing out of the machining tank through an opening in the machining tank; a feed water pump configured to deliver the machining fluid in the clean water tank to the sealing portion; a nozzle through which the machining fluid is jetted against the workpiece during the electric discharge machining; and a machining fluid pump configured to deliver the machining fluid in the clean water tank to the nozzle; characterized in that the wire electric discharge machine further comprises: a measurement unit (10b, 13, 14) configured to measure the flow rate of the machining fluid delivered to the nozzle; a flow rate storage unit stored with the flow rate of the machining fluid delivered to the sealing portion in association with the flow rate of the machining fluid delivered to the nozzle; a flow rate setting unit configured to read the flow rate of the machining fluid delivered to the sealing portion from the flow rate storage unit and set the read flow rate, based on the flow rate measured by the measurement unit; and a flow rate control unit configured to control the flow rate of the machining fluid supplied to the sealing portion based on the flow rate set by the flow rate setting unit. a measurement unit (10b, 13, 14) configured to measure the flow rate of the machining fluid delivered to the nozzle; a flow rate storage unit stored with the flow rate of the machining fluid delivered to the sealing portion in association with the flow rate of the machining fluid delivered to the nozzle; a flow rate setting unit configured to read the flow rate of the machining fluid delivered to the sealing portion from the flow rate storage unit and set the read flow rate, based on the flow rate measured by the measurement unit; and a flow rate control unit configured to control the flow rate of the machining fluid supplied to the sealing portion based on the flow rate set by the flow rate setting unit.