Ying Xin Propofol Medium/long-Chain Fat Emulsion Injection in the anesthesia induction effect fast, rapid awakening, complete functional recovery and low incidence of postoperative adverse reactions such as nausea and vomiting, widely used in anesthesia induction of anesthesia, anaesthesia maintaining, critical patients in the ICU sedation, which is the preferred drug in abortion, plastic surgery and all kinds of endoscopy. In the clinical application of narcotic drugs, Propofol has been a pivotal drug.The effects are far higher than any other drugs, and keep the steady growth every year.