Flexible circuit board coating detection device

The utility model discloses a flexible circuit board coating detection device which comprises a base, the upper surface of the base is fixedly connected with a supporting column, one side of the supporting column is fixedly connected with a supporting block, the upper surface of the supporting block is provided with a sliding groove in a penetrating mode, the inner wall of the sliding groove is connected with a moving block in a sliding mode, and the moving block is fixedly connected with the base. The rack and the moving block are driven by the rotating gear ring to move up and down, the moving block drives the magnifying glass to move up and down, the height of the magnifying glass is adjusted, when the moving block moves, the magnifying glass can move up and down through the rotating gear ring, and the magnifying glass can move up and down through the rotating gear ring, so that the height of the magnifying glass can be adjusted. The abutting limiting blocks are extruded through the limiting holes in the t