Fangsb.an; Tashan, Guafushan, et al. from Liuhe county, Jiangsu provin- ce are known pliocene volcanos which cosist of basanite and alkali olivine basalt. Lherzolite inclusions and megacrysts of augite and anorthoclase occur血these rocks. Lherzolites have inequal-grained, porpyroclastic, inequal crystalIobtastic texture. The last two types are predominant. Chemical compositions of the host rock are characterized by enrichment of incompatible elements K，P，Ti and higher Na2O and Al2O3/CaO ratio.These basalts show rapizily fractionated transition metal and REE distribution pat- terns: Above mentioned facts indicate host rocks are products of Iow melting of ,mantle-peridotites. Their M-value is lower which may. suggest primary ba- saltic magma underwent fractionation at high pressure. Lherzolites are enriched in fusible components and have lower 100Mg/ (Mg+TFe) ratios.;Transition metals and REE have slightly fractioned distri- bution patterns belonin} to f estile mantle. Fusible components vary with de- gree of partial meltiug Mineralogical compositions of Lherzolites alsoindiccate this pooint. The calculated results oftemperature and pressure for Lherzolites are 1026 -1237℃ and 16-32 Kb respectively which indicate inclutions have been formed