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烟用醋酸纤维丝束的生产过程中，卷曲能是评价纤维丝束性能的重要的指标之一。烟用醋酸纤维丝束是以二醋片、丙酮为主要原料，通过溶解、过滤、纺丝、卷曲、干燥、摆丝、打包最终形成成品包，具备发往烟厂使用的条件。本文着重对烟用醋酸纤维丝束生产中的卷曲工艺机理及作用、卷曲效果的表征方法、卷曲能的检测方法的概述，以及不同卷曲能下对烟用醋酸纤维丝束各项指标的影响，和制成嘴棒吸阻稳定性的研究。目前通过卷曲能这一项指标来表征烟用醋酸纤维丝束的卷曲程度。卷曲能的高低和稳定性对嘴棒吸阻的稳定性有比较大的影响。“,”Crimp energy is one of the most important indexes to evaluate the properties of acetate tow in the production process. Acetic acid fiber tow for cigarette use is made of diacetate and acetone as main raw materials. Through dissolving, filtering, spinning, crimping, drying, spinning and packing, the final product package is formed, which is qualified for use in cigarette factory.In this paper, the mechanism and function of crimping process, the characterization method of crimping effect, the detection method of crimping energy, the influence of different crimping energy on various indexes of cigarette acetate tow, and the research on the suction resistance stability of nozzle rod are introduced. At present, crimp energy is used to characterize the crimp degree of acetate tow. The curl energy and stability have great influence on the stability of the suction resistance.