The silicon-aluminum alloy material can maintain the excellent properties of silicon and aluminum, and the content of silicon and aluminum is quite rich. The preparation technology of silicon powder is mature and the cost is low. At the same time, this material does not pollute the environment and is harmless to the human body. At the same time, silicon-aluminum alloy also has good thermal conductivity, high specific strength and rigidity, good plating performance with gold, silver, copper, nickel, weldability with substrates, easy precision machining, etc. It is a kind of superior performance. Electronic packaging materials with broad application prospects, especially in high-tech fields such as aerospace, space technology and portable electronic devices.