The LungsReady Breathing Simulator creates an algorithm model based on the human body physiological and pathological characteristics of respiratory mechanics, and can simulate normal and different disease state of the human respiratory system by adjusting the mechanical parameters. It can be used with real ventilators and anesthesia machines to trigger and respond as a real patient does, make it an ideal choice for ventilation management training in anesthesia, critical care, emergency medicine, respiratory care etc. It also finds wide application in respiratory disease research and real ventilator detection and calibration.