Abstract: The Ag‒SnO₂‒Y₂O₃ composite powders were uniformly mixed via high-energy ball milling, and the corresponding advanced electrical contact materials were subsequently fabricated by vacuum hot-press sintering. The influences of milling parameters (milling medium, rotation speed, and duration) and sintering temperature (750~950  ℃) on the microstructure and physical properties of the electrical contact materials were systematically investigated. In the results, the anhydrous ethanol as ball milling medium can prevent powder agglomeration and improve the uniformity of powder mixing. The rotational speed of 200 r/min and milling time of 12 h can further refine the particles and enhance the powder dispersion. The sintering temperature can significantly affect the material properties. The microstructure of the samples sintered at 850 ℃ is the most uniform, and the reinforcing phase forms a stable network structure in the Ag matrix, enhancing the interfacial bonding ability. The samples sintered at 900 ℃ has the better relative density, hardness, and relative electrical conductivity, but the reinforcing phase agglomeration is serious, affecting the performance stability.