Trace elements of 304 purified mineral samples collected from 33 lead-Zinc -pyrite ore deposits in the south of Hunan were studied. The minerals includes galena (115 samples)，sphalerite (109 samples) and pyrite (80 samples)·The contents of trace elements were given by chemical analysis. It was found that the differences of the contents of some trace elements and the ratios of some element pairs are rather significant. Based on these differences these ore depo- sits can be classified into two types, hte post magmatic hydrothermal deposites relatd to Yanshanian acid to intermediate-acid hypabyssal and al- trahypabyssal magmatic rocks(I)and the transformed sedimentary ore deposits related to late Palaeozoic formations of carbonate rocks( II).In the logarithmic coordinate diagrams the points representing the contents of some trace elements and the ratios of some element pairs in the minerals of these two types of deposits distribute independently in separated areas. And so the author consi- ders that it is effective to differentiate metallogenic types of ore deposits ac- cording to these values. Based on a great amount of analytical data the trace element metallogenic criteria for these two types of deposits have been summed up as follows: