目的:对金粟兰科植物银线草Chloranthus japonicusSib的生药学特征进行鉴别研究,为拟订质量标准提供参考依据。方法:采用药材性状、组织显微鉴别的方法进行鉴定。结果:银线草根的横切面初生木质部五原型,皮层无分泌道;茎横切面中束间纤维将多个维管束连接成环;叶横切面主脉维管束1～3个。结论:上述生药学特征能够为品种鉴定和资源开发利用提供参考。 OBJECTIVE: To identify the pharmacognosy characteristics of Chloranthus japonicus Sib, a plant belonging to the genus Coturnum, to provide references for the formulation of quality standards. Methods: The medicinal traits, microscopic identification of tissue identification method. Results: There were five primary xylem sections in the cross-section of silver grass roots and no cortical secretions. In the cross-section of the stems, the inter-bundle fibers connected the multiple vascular bundles into rings; Conclusion: The above pharmacognosomic features can provide reference for variety identification and resource exploitation and utilization.