【目的】 根据沙枣Elaeagnus angustifolia在光肩星天牛Anoplophora glabripennis产卵刻槽处泌胶的特殊现象，解析刻槽诱导的树胶分泌特性、组织结构变化和挥发性次生代谢物组成，探讨光肩星天牛刻槽产卵后沙枣的生理及化学防御响应。【方法】 通过野外调查记录沙枣在光肩星天牛产卵刻槽处的泌胶特性，并对刻槽部位的木材组织进行解剖学观察，采用气相色谱-质谱联用技术（GC-MS）对比分析天牛产卵刻槽部位的挥发性次生代谢物组成及差异。【结果】 沙枣在光肩星天牛刻槽产卵部位大量分泌树胶，包裹并致死虫卵（致死率99.27%）。解剖学观察显示，刻槽部位形成创伤性树胶道，与健康组织相比，组织结构发生明显变化。GC-MS结果表明，刻槽部位特异性富集α-蒎烯和松油醇等挥发性次生代谢物。【结论】 光肩星天牛的刻槽产卵可诱导沙枣产生分泌树胶、生理结构变化及挥发性代谢物释放等多重防御响应。这些防御反应协同作用，可有效抑制天牛卵的孵化并阻断其繁殖，提高沙枣的抗虫能力。本研究初步分析了沙枣针对光肩星天牛的系统性防御策略，为利用沙枣生态自控光肩星天牛灾害提供了理论依据。

 [Aim]  To investigate the characteristics of the gum secreted by Elaeagnus angustifolia in response to the oviposition scars of Anoplophora glabripennis, including associated structural changes to plant tissues and the composition of volatile organic compounds (VOCs) in the gum. [Methods]  Field surveys were conducted to examine the characteristics of gum in A. glabripennis oviposition scars. Microscopic anatomical observations were performed to analyze tissue structure at these sites. Gas chromatography-mass spectrometry (GC/MS) was used to compare gum composition and differences in VOCs. [Results] E. angustifolia secretes large amounts of gum at oviposition scars, encapsulating and effectively killing A. glabripennis eggs, with an egg mortality rate of 99.27%. Anatomical observations revealed the formation of traumatic gum ducts, accompanied by significant structural alterations in the affected tissues. GC-MS analysis indicates that oviposition scars accumulated high levels of VOCs, including monoterpenes such as α-pinene and terpinen-4-ol. [Conclusion]  The oviposition scars of A. glabripennis induce multiple defensive responses in E. angustifolia, including gum secretion, structural modifications to tissues, and the emission of VOCs. These defensive responses work synergistically to kill eggs and thereby disrupt A. glabripennis's reproductive cycle. These results provide information useful to developing ecological strategies for controlling A. glabripennis outbreaks.