目的 用简便、经济的方法制备性能良好、兼具抗静电性能与防伪性能的标签复合薄膜。方法 以木质纤维为原料，在采用自然干燥法的基础上，外加磁场制备定向纳米四氧化三铁粒子(nano-Fe3O4)/纤维素纳米晶体(CNCs)抗静电彩虹防伪复合薄膜。综合分析复合薄膜四探针电导率、偏光显微镜、扫描电镜、衰减全反射傅里叶红外光谱、X 射线衍射光谱等的测试结果。结果 nano-Fe3O4 的加入及磁场定向可在不影响CNCs 胆甾型液晶自组装形成彩色图案的情况下，提高复合膜导电性，且复合膜发挥最佳效果时，CNCs 与nano-Fe3O4 最佳质量比为20∶1。结论 该标签膜兼具抗静电性能与防伪性能，具有一定的包装防伪应用价值。

The work aims to prepare the label composite film with good properties, anti-electrostatic performance and anti-counterfeiting performance in a convenient and economic way. With wood fiber as raw material, based on natural seasoning and magnetic field, the directional ferroferric oxide nano-particles (nano-Fe3O4)/nanocrystaline cellulose (CNCs) anti-electrostatic iridescence anti-counterfeiting composite film was prepared. Composite film four-probe specific conductance, polarizing microscope, scanning electron microscope, attenuated total reflection Fourier infrared spectrum and X-ray diffraction spectrum, etc. were comprehensively analyzed. The testing showed that adding nano-Fe3O4 and magnetic field orientation could improve the film’s conductivity without preventing CNCs cholesteric liquid crystal self-assembly from forming colorful pattern, besides, the best mass ratio of CNCs and Fe3O4 was 20∶1 when the composite film had the best effect. This label film has anti-electrostatic performance and anti-counterfeiting performance, and it has certain application value for packaging anti-counterfeiting.