With the advancement of technology, electric arc furnace technology is also constantly iterating. Modern electric arc furnaces have evolved from ordinary AC arc furnaces to various types such as DC arc furnaces and ultra-high power arc furnaces. Among them, the ultra-high power electric arc furnace further shortens the smelting time by increasing the input power, and the single furnace smelting cycle can be controlled within 1 hour, greatly improving production efficiency. The integration of intelligent control technology has added wings to electric arc furnaces. Through computer systems, precise control of electrode lifting, furnace temperature, and batching ratios is achieved, which not only ensures the stability of steel quality, but also reduces energy consumption and labor costs. Some electric arc furnaces are also equipped with exhaust gas recovery and treatment systems, which purify, recycle and reuse the gas generated during the smelting process, achieving the cascade utilization of energy.