The invention discloses a crystal cleaning process for improving the quality of a crystal finished product. The crystal cleaning process comprises the following steps of a, primary inspection, specifically, inspecting products to be cleaned, and placing qualified products on a frame for cleaning; b, soaking reduction, specifically, placing the products to be cleaned in water for soaking reduction;c, soaking in liquid medicine, specifically, after the products are reduced in the water, adding the liquid medicine into the water, and soaking the products in the liquid medicine to meet the cleaning requirement; d, machine washing, specifically, taking out the products soaked in the liquid medicine, and putting the products into crystal cleaning equipment for cleaning operation; e, secondary cleaning, specifically, placing the cleaned products into clean water again to soak the cleaned products, and removing the liquid medicine and dirt on the surfaces of the products; f, drying, specifically, putting the clean products into a drying machine for drying treatment; and g, re-inspection, specifically, re-inspecting the products.