Active Pharmaceutical Ingredient (API),is the core component of a drug and directly determines its efficacy and safety. It is a chemical substance that has undergone in-depth research, strict production processes, and ultimately meets drug quality standards, used for the treatment, prevention, or diagnosis of diseases in humans and animals. In the pharmaceutical industry, strict adherence to GMP (Good Manufacturing Practice) is crucial in the production process of API raw materials. This includes multiple aspects such as the selection of raw materials, control of the production environment, calibration of production equipment, monitoring of the production process, and inspection of finished products, to ensure the purity and safety of APIs and reduce potential impurities and pollutants. The purity and impurities of raw materials directly affect the quality of drugs. There are various types of API for active pharmaceutical ingredients, covering multiple therapeutic fields such as antibiotics, antiviral drugs, analgesics, antidepressants, and anti-tumor drugs.