Abstract: Longhuo Gold-antimony deposit is an important deposit which is recently discovered in Youjiang metallogenic belt of Guangxi. In order to explore the ore-forming materials source of this deposit, the geological background of the deposit and the geochemical characteristics of rare earth and trace elements of wall rocks and orebodies are systematically compared. The results show that: orebodies are mainly located in Carbonate of the Lower Carboniferous-lupper devonian formation, and controlled by the fault near the east-west direction, and show layer-like and vein shape. The element geochemical characteristics indicate that the ore-forming fluid of the deposit has the characteristics of crust-mantle mixing. The ore-bearing wall rock may not be the main source of ore-forming materials. The main ore-forming material may be brought by deep-source fluids in the mantle. The fluid is a reducing environment fluid system with Cl^->F^-. Based on the geological features of the deposit, it is considered that the Longhuo Gold-antimony deposit is a medium to low temperature hydrothermal gold deposit.