Abstract: Two types of enclaves occur in the magmatic plutons in Tongling area, Anhui. The first type is residuals of metamorphic rocks of high amphibolite facies. The other one is magmatic rocks of monzonitic-dioritic compositions. A detailed petrologic and minera1ogic study and a forming condition calculation have been carried out on the two types of enclaves, on the basis of the study and the calculation, a systematical discussion has been made on the relation of the enclaves to their hosts, the material source of the magmatic rocks and associated mineral deposits, and the mechanism of magmatism-metallogeny. This leads to propose a new metallogenetic model for stratahound skarn type ore deposits associated with the magmatic rocks of the syntectic type. The new model can be simply summarized as partial melting of old metamorphic basement rocks in depth, followed by accumulating, differentiating and emplacing of magmas to form the deep-level and shallow-leve1 magma chambers, then the mixing of different composition magmas associated with their crypto-explosion, migration of the gas hearing ore fluid and precipitating of metals in the fluid within the magmas.