Device for detecting warping degree of flexible circuit board

The utility model provides a device for detecting the warping degree of a flexible circuit board, and the device comprises a fixing structure which is used for fixing one side of the flexible circuit board so as to enable the flexible circuit board to extend from the fixing structure to a direction away from the fixing structure; the light source assembly is arranged on the side, used for fixing the flexible circuit board, of the fixing structure and comprises a light source emitting end and a light source receiving end, the light source emitting end is used for emitting light rays, and the light source receiving end is used for receiving the light rays; the propagation direction of the light is perpendicular to the extension direction of the flexible circuit board, the orthographic projection of the light in the plane where the flexible circuit board is located is located in the orthographic projection of the flexible circuit board in the plane, and the distance between the light and the plane in the direction perpendicular to the plane is smaller than a preset distance.