Objective: To study the chemical consistuents of Pouzolzia zeylanica (L.)Benn.Var.Microphylla(Wedd.)W.T.Wang. Method: Several chromatographic methods were applied to isolate and purify compounds. Their structures were identified on the basis of physicochemical properties and spectroscopic datas. Result: Sixteen compouds were isolated and identified as β-sitosterol(1)

tridecyl docosanoate(2)

tetrariacontanol(3)

tetrariacontanoic acid(4)

octacosanol(5)

fiedelin(6)

epifriedelinol(7)

stigmasterol(8)

22

23-dihydrospinasterol(9)

daucosterol(10)

daucosterol palmitate(11)

Bis(2-ethylhexyl) phthalate(12)

kaempferol-7-O-α-L-rhamnopyranoside(13)

quercetin-7-O-α-L-rhamnoside(14)

quercetin-3

7-2-O-α-L-rhamnoside(15)

Vitexin(16). Conclusion: All the compounds were isolated from P. zeylanica(L.)Benn.Var.microphylla(Wedd.) W. T. Wang for the first time.Compounds 2-5

7-9

11-12 were isolated from this genus for the first tmie.