Positioning measurement and defect detection method of display screen

The invention relates to the field of glass detection, and particularly relates to a positioning measurement and defect detection method of a display screen; a display screen detecting device is applied to perform the positioning measurement and defect detection on the display screen; the display screen detecting device comprises a first camera, a second camera, a camera bracket, an X-axis servo motor and a Y-axis servo motor; the first camera and the second camera are arranged on the camera bracket, the X-axis servo motor drives the camera bracket to move along the X axis direction, and the Y-axis servo motor drives the camera bracket to move along the Y axis direction; the positioning measurement and defect detection includes image collection, image pretreatment and surface defect detection. Compared with the prior art, the invention can shoot, position and detect the display screen by the detection device, effectively detect multiple defects of the display screen, solve the problem of low detection efficie