Jewelry as a kind of close-fitting decoration, whether the processing quality of its products is fine or not is particularly important. In addition, for jewelry, a small batch processing product, if the traditional open mold processing is used, the delivery time will be extended to a certain extent, and the product sales will be further affected. Therefore, necklace jewelry laser engraving machine has gradually become the preferred processing tool in the jewelry industry because of its high precision and high efficiency.