中文摘要：

目的：对藏药樱草杜鹃嫩叶和嫩枝挥发油的化学成分进行研究,为樱草杜鹃的开发利用提供科学依据。方法：采用水蒸气蒸馏法提取樱草杜鹃嫩叶和嫩枝中的挥发油,用毛细管气相色谱—质谱联用技术（GC-MS）对其化学成分进行分析,以面积归一法测定各个成分的相对百分含量。结果：共分离出65个峰,鉴定了其中59个化学成分,占挥发油总量的97.50%。结论：樱草杜鹃嫩叶和嫩枝挥发油的主要成分为β-蒎烯（13.81%）、α-蒎烯（12.86%）、双戊烯（8.18%）、β-石竹烯（7.55%）、月桂烯（6.36%）、萘（4.63%）、杜香醇（4.44%）、γ-松油烯（4.23%）、香橙烯（3.94%）、α-松油醇（2.74%）等。

英文摘要：

Objectives：To analyze the chemical constituents of the volatile oils of Rhododendron primulaeflorum Bur.et Franch.and provide a scientific evidence for the deep exploration and usage of it.Methods：The volatile oils of Rhododendron primulaeflorum Bur.et Franch.were extracted by water steam distillation and its chemical constituents were separated and identified by GC-MS.The content of each constituent was determined by area normalizetion method.Results：Sixty five peaks were separated and fifty nine components were identified,which constituted about 97.50% of the total volatile oils.Conclusions：The main compounds are β-pipene（13.81%）,α-pipene（12.86%）,limonene（8.18%）,β-caryoph-yllene（7.55%）,myrcene（6.36%）,naphthalene（4.63%）,（＋）-ledol（4.44%）,γ-terpipene （4.23%）,（＋）-aromadendr-ene（3.94%） and α-terpineol（2.74%）.