In recent years, alumina Al2O3 has emerged as a key material in the electronic device industry due to its excellent properties and versatile applications. This article aims to explore the performance advantages of alumina in electronic devices and analyze the development trends in this field. The discussion covers the electrical, thermal, mechanical, and optical properties of alumina, as well as its application in various electronic devices. The article concludes with potential future advancements and challenges in the utilization of alumina in electronic devices.