The invention discloses a high-simulation-degree cabin of a flight simulator, including a body. A surface of the body is embedded with a display screen, a position icon display window is arranged in alower right corner of the display screen, a display screen surface above the position icon display window is provided with a weather display window, a speed per hour display window is disposed at a lower left corner of the display screen, and a balance display window is disposed on a display screen surface between the speed per hour display window and the position icon display window. The top endin the body is equipped with a light and an alarm, and the top of a lower hinge shaft is equipped with a hydraulic cylinder, and the top of hydraulic cylinder is connected with an upper hinge shaft through a piston push rod. The cabin solves the problem of low simulation degree of the flight simulator cabin and inability of simulating high-attitude distress alarming by setting the body, the hydraulic cylinder, the display screen, the alarm, the speed per hour display window, the balance display window, the weather display window and the position icon display window.