Abstract: This paper analyzes the fabrication fixture of double-eccentric-hole parts on CNC lathes, and expounds the mutual positioning and clamping mode of the special fixture for double-eccentric-hole workpieces, as well as the requirements of craftsmanship for the special fixture. In order to balance centrifugal force, the counterbalance is set up, and the parameter dimensions and centroid coordinates of the counterbalance are analyzed and calculated in detail. Good results have been obtained through testing. The fixture cost is cheap, the processing efficiency is high, and the processing precision is good, which can bring good economic benefit for the enterprises.