Abstract: The dioritic enclaves are widely distributed in the Lisong granite. An integrated field and laboratory study on the colours, shapes, textures, structures, compositions, mineralogy and petrology of the enclaves indicates that they are products of rapid crystallization from the silicate melt. The major elements analytical data show a trend characterized by a linear correlation between rock-forming elements. In trace elements, both the dioritic enclaves and hosting granite are enriched in LILEs and HFSEs. Based on the zircon saturation temperature and hornblende geobarometer estimation, the crystallization temperature and pressure of enclaves and hosting granite are very close, in the range of 793 - 824 ℃ and 3.5 - 5. 1 Kb, respectively. The petrological and isotopic features indicate that the Lisong enclaves and hosting granite were basically crystallized at the same time, but with different crust-mantle proportions and different sources. All these integrated data demonstrate that the Lisong enclaves are remnants of magma mingling.