OBJECTIVE： To study the chemical constituents of Sedum lineare. METHODS： Silica gel column chromatography， TLC and crystallization were adopted to isolate the chemical constituents of S. lineare. And chemical structures were analyzed and identified based on physicochemical properties and spectral data of compounds. RESULTS： A total of 6 sterols and 2 triterpenoids were isolated from petroleum ether fraction of S. lineare， which were identified as stigmaster-5-ene-3β-ol-7-one（1）， stigmaster-5-ene-3β， 7α-diol（2）， daucosterol（3）， daucosterol palmitate（4）， β-sitosterol（5）， stigmaster-7-ene-3β-ol（6）， δ-amyrin（7）， and δ-amyrone（8） respectively. CONCLUSIONS： Compounds 3， 4 and 7 are isolated from S. lineare for the first time， and compound 4 is isolated from genus S.lineare for the first time. The study has laid certain foundation for the quality evaluation of S. lineare.