Abstract: Abstract: A lot of peridotites are distributed at Liziping Village on the western slope of Diancang Mountain. Their country rocks are a medium? Juan and low? Juan Grade Metamorphic Series, consisting of amphibolite and metamorphosed albite granite. The petrography, petrochemistry and geochemistry of these rocks all indicate the features of ophiolitic melanges, suggesting the existence of relict fragments of the Paleo? Juan tethys Oceanic Crust on the western slope of Diancang Mountain.