The feasibility of Al2O3p/6061Al composites materials brazing in resistance furnace protected by argon gas is investigated. Results show that the brazed joint with good quality can be got by using the reasonable brazing filler metal and proper brazing flux (HL401+QJ201) and the optimum brazing technological parameters. The mechanical properties of brazed joint, such as shearing strengthen and microhardness have been tested, and the microstructure analyses such as metallographic observation, XRD and SEM, have been done to discuss the mechanism of the brazed joint forming in theory, providing some information on how to get excellent brazed joint.