菌丝体作为灵芝生长发育过程中的一个特定生理阶段，会产生不同于子实体和孢子的特定结构的灵芝酸类三萜化合物。本文总结了灵芝菌丝体中已发现和鉴定的三萜化合物结构、生物活性及其构效关系的研究进展，以期为灵芝菌丝体三萜在生物合成、代谢调控等的基础研究及相关产品的开发应用提供科学参考。

During vegetative growth and development of Ganoderma lingzhi (or Ganoderma lucidum), mycelia produce triterpenes with specific structures, which are different from the tritepenes in fruiting bodies and basidiospore. This paper summarized the progress of researches on structures, bioactivities and structure-activity relationship of triterpenes isolated and identified from mycelia of G. lingzhi in order to provide scientific reference for the basic research in biosynthesis, metabolic regulation and application of triterpenes and their related products.