在空拉黄铜管工艺实验的基础上，探讨了空拉变形工艺对残余应力和壁原变化规律的影响．实验结果表明，空位管具有较大的残余应力；空技拔时的道次加工率，加工道次和对模拉伸时所用衬模的尺寸对管材的残余应力和壁厚变化都有显著的影响；不均匀变形指数Q可很好地描述变形前后截面尺寸变化对残余应力的影响． On the basis of the experiment of empty drawing brass tube, the influence of the drawing process on the residual stress and the variation of the original wall are discussed. The experimental results show that the hollow tube has a large residual stress. The pass rate, the pass number of the pass and the size of the liner used for drawing the die have significant effects on the residual stress and the wall thickness of the hollow tube. Influence; Uneven deformation index Q can well describe the deformation before and after the section size changes on the residual stress.