Abstract: Photoresists play a major role in photolithography while fabricating integrated circuits. The photoresist industry has high technical barriers, and the market is mainly monopolized by foreign companies. In recent years, with the transfer of production capacity to mainland China, the demand for photoresist has steadily increased, and it is urgent to realize import substitution. This article focuses on the photoresist industry, comprehensively elaborating on the global industry situation, related industry giants, industry characteristics and the problems faced by the domestic photoresist industry, and finally provides suggestions for the development of the domestic photoresist industry.