Whether it is reducing the price of imported ore or lowering the price of caustic soda, neither can avoid the increase in operating capacity, nor can they prevent the continuous price decline. This is because, under the same conditions of utilizing imported ore, coastal new projects still have a significant cost advantage over inland capacity. Recently, the only way for inland alumina enterprises to survive is to maximize the supply ratio of domestic ore, especially the supply of self-mined ore—more mining, more reserves, and focusing on good mines. A rough estimate indicates that under the same conditions, increasing the supply of domestic ore with a standard grade by 20-30% would significantly narrow the cost gap with coastal capacity. Currently, the supply of inland domestic ore remains extremely tight, and some alumina enterprises have benefited from personalized advantages due to the increased mining volume of their own mines.