The invention supplies a measure method of attach conductive film, the method includes: supplying one plaque, upper the plaque there is a gold finger with a conductive film layer; using a light sourceexposure the side face; using a image sensor receive the reflected light of conductive film layer and produce a gray level image; using a software compete the gray level image to find the thickness orlength; and judging the size of thickness or length, judge the conductive film layer error while the thickness less then the first threshold number or the length less then the second threshold number . More accurate detection of conductive film layer attaches errors in order to reduce error detection in the case.