Abstract: The paper concerns in the fabrication of ultra-fine molybdenum wire used for Z-pinch physics experiment by alternating current electrolysis polishing method.The(influences) of temperature,concentration of solution,corrosion time on the diameter,surface morphology and strength of molybdenum wire are studied.The surface morphology of molybdenum wires was tested by SEM and AFM,and their strength was measured by digital force gauge.The surface of fabricated 6μm ultra-fine molybdenum is smooth.