The invention relates to a coating removing marking machine, which comprises a frame, a five-axis mechanism for placing a product, a CCD camera assembly, a laser, a marking head, a height measuring sensor, and an elevating mechanism. The elevating mechanism can drive the marking head, the CCD camera assembly, and the height measuring sensor to move up and down. The laser is connected to the marking head through an optical path. The five-axis mechanism is arranged on the frame and is arranged under the elevating mechanism and carries a product to reciprocate between the CCD camera assembly andthe marking head. When a product is processed, the product is positioned on the five-axis mechanism at first, the height measuring sensor measures the heights of two ends of the product, through the five-axis mechanism, the heights of two ends of the product are equalized, then the product is delivered to a position under the CCD camera assembly, the CCD camera assembly takes a picture of the product (a mobile phone shell) so as to position the product, finally, the five-axis mechanism delivers the product to a position under the marking head so as to mark the product by laser, and the coatingof the product is removed. The provided marking machine has the characteristics of high automation degree, low noise, and high precision, and largely improves the processing efficiency and processingquality.