Objective:Studies on the chemical constituents of Guangxi characteristic medicine Murdannia nudiflora.Method:The slica column chromatography and recrystallization were used to isolate and purify the chemical constituents of M.nudiflora.Result:Fifteen compounds have been isolated and identified as:n-nonatriacontane (1),n-octyl eicosenoate (2),cholest-7-en-3-one (3),22,23-dihydrospinasterone (4),n-tetracosanoic acid (5),n-triaconatanoic acid (6),β-sitosterol (7),campesterol (8),stigmasterol (9),ergostenol (10),stigmast-7-en-3-ol (11),stigmasterol-3-O-glucopyranoside (12),daucosterol (13),(2S)-1-O-heptatriacontanoyl glycerol (14),bracteanolide A (15).Conclusion:Compounds 1-15 were isolated from this plant for the first time.