Temperature can change the polarization characteristics of liquid crystal materials,and the change will directly affect the display performance of Liquid Crystal Display (LCD).Therefore,if we obtain the LCD polarization characteristics in high-temperature environment,the changes of its display characteristics when it works in such environment are predictable.A method is proposed for the measurement of LCD polarization characteristics in high-temperature environment.First,a backlight LED and a polarizing film are placed in a temperature test chamber to simulate a high-temperature environment.The polarization state of the linearly polarized beam after passing the glass door of the chamber is measured by using a surface imager,so as to obtain the polarizing characteristics of the glass door.Then,the LCD is placed in the test chamber.The temperature and polarization characteristics of the LCD in the high-temperature state are obtained via the Stokes vector that is compensated by the temperature and polarization characteristics of the glass door.