This is a dual-platform, dual-head automatic grinding machine that can be customized according to the customer's large product dimensions. Its gantry-style structure allows for maximum grinding width and height, and it is relatively more cost-effective compared to other structures. The dual-ground rail structure first ensures grinding efficiency, enabling products to be ground both from above and below. Additionally, the ground rails can be extended to a considerable length, guaranteeing the grinding size. The dual grinding heads provide customers with more options to achieve different effects when grinding various products.