Abstract: The dark-coloured enclaves were found in subvocanic dike for the first time in the Xiangshan district，Jiangxi Province，which provides a new information for studying Mesozoic vocanic-intrusive complex in this region. This kind of enclaves exsit in smal1 amounts，with chilled margin，back veins，and other obvious quenching characteristics. Petrologically they aye mainly dioritoids. We colleted 14 samples ，including the basemental rocks，volcanic rocks，subvolcanic rocks and dark enclaves，and made detailed REE analyses on them. Combining with the previous study， we tried to explain the genetic relations hip and difference between them in a more integrated and systematic way. The data and diagrams demonstrate that: 1)as a whole，the magmas which formed various volcanic rocks with slight to intermediate fractionation degree of REE and strong europium negative anomalies ，were differentiated an d evolved in the same magmatic reservoir， The latter was originated from the continental crust; 2)products of the bicyclic volcanic activity. Rhyodacite and porphymclast lava，represent double emptying of magma reservoir; 3)REE data of dioritic enclaves don’t show strong europium negative anomalies . Conseguently we concluded that the magma of these enclaves was derived from a deeper level，and could be a mixture of lower crust and enriched mantle with a higher mixing proportion. Furthermore，Pb，Si，Nd isotope data also provided similar information. εNd(t) of volcanics and subvolcan cs are –8.8 and –11.2，respectively，which are very close to the upper crust va1ue in southeast China，while that for the dioritic enclaves is –6.5，which indicates involvement of a deeper source component. Mesozoic volcanic-intrusive complex in Xianshan district was generated by the partial melting of sialic lithosphere and belongs to the S-type in origin，which is consistent with the popular point of view. However，discovery of dioritic enclaves implies possible participation of lower crust or even upper mantle component