Abstract: The Pulu volcanic rock belt in Xinjiang is located on the southern edge of the Tarim Plate and to the north of the West Kunlun Block. It is an important part of the Late Paleozoic West Kunlun orogen‐ ic belt and also a key area for the accumulation of polymetallic resources in the region. To reveal the forma‐ tion mechanism，tectonic background and mineral element evolution process of this volcanic rock belt，de‐ fine the mineralization period of the West Kunlun polymetallic deposit，assess the mineralization potential， and provide a scientific basis for the division of mineralization zones and subsequent mineral exploration. The research adopted a method combining field investigation and indoor analysis. Field exploration was con‐ ducted to clarify the rock formation，lithological composition and spatial distribution of the volcanic rock belt. The rock types and alkalinity were identified through rock chemical analysis indoors，combined with TAS diagrams and AR-SiO ₂ relationship diagrams. Rare earth elements were tested and the distribution curves were analyzed to explore the magma source area. The mineral bearing was evaluated by using Xg /Xa values and concentration Clark values. The results show that this volcanic rock belt is mainly composed of in‐ termediate-basic volcanic rocks，which have undergone metamorphism from low-green schist facies to high-green schist facies，and the rock types are complex. The samples in the TAS diagram are mostly ba‐ salt，andesite and ultrabasic rocks，and the alkalinity is mainly calc-alkaline rocks. The total amount of rare earths ∑REE is (25.85~120.70) ×10⁻⁶，showing the characteristics of continental thread-porphyry basalt. The Xg /Xa values of Zn，Cu and Pb are relatively low. Sb is a strongly aggregated element. Zn，Pb，Cu and Ag show a multi-peak skewed distribution. The deposit is mainly copper and copper-zinc. The formation of volcanic rock belts is related to the activities of discrete plates and has great potential for mineral explora‐ tion. The mineralization is controlled by the rift environment，magmatic activities and faults. The research re‐ sults are of great value for the study of the structure and mineralization of the West Kunlun and mineral ex‐ ploration.

Key words: volcanic rock belt, petrochemical characteristics, ore-bearing property