Improved automatic glass stress detecting device

The invention discloses an improved automatic glass stress detecting device. The improved automatic glass stress detecting device comprises a polarizer, an analyzer and a detection eyepiece, wherein the polarizer is mounted on the upper surface of a base; an LED light source is further arranged at the position, below the polarizer, on the base and is connected to a brightness regulator arranged at one side of the base; a sample fixing device is further arranged at the position, above the polarizer, on the base. The detection accuracy is high, the test brightness can be controlled by virtue of the LED light source arranged on the base, and the accuracy of a measurement result is improved; moreover, a tested sample can be fixed by the sample fixing device, and measurement errors caused by product movement under the inclined test environment are prevented.