With intravenous anesthesia, you can fall asleep in about 30 seconds. The speed of falling asleep is related to the type of anesthesia medication, the speed of injecting anesthesia medication, and the difference of individual’s physical condition, so it is not possible to make a generalization. Intravenous anesthesia is to play the characteristics of each drug, to achieve smooth anesthesia, fewer side effects, fast awakening and other purposes, and now more complex application, can be called intravenous compound anesthesia. How long can you fall asleep after intravenous anesthesia can not be generalized, generally speaking, the most common intravenous anesthesia drug is propofol, pushed into the vein about 30 seconds after the patient can enter the sleep state. However, depending on the type of drug and the speed at which it is pushed into the vein, the time it takes to fall asleep after IV anesthesia varies, and is usually less than 1 minute. There are individual differences in how long it takes to fall asleep after IV anesthesia, but it is usually around 30 seconds. It is recommended to keep a good mood before the operation and avoid too much tension.