A preparation method of brown sugar tablets. Specifically, sugar cane is pressed to extract sugar cane juice, which is then filtered and boiled into syrup. Use quicklime as a coagulant, and add a coagulant during the boiling process of sugarcane juice. The sugarcane juice is concentrated into syrup through boiling, and then the syrup is cooled and formed. Finally, it is divided into flakes and packed according to the amount to obtain the finished product. . By implementing the present invention, the whole production process of the brown sugar slice finished product only needs about two hours before and after. The produced brown sugar tablet product almost retains all the ingredients in cane juice. In addition to the function of sugar, it also contains vitamins and trace elements, such as iron, zinc, manganese, chromium, etc., and its nutritional content is much higher than that of brown sugar and white sugar. . Simultaneously, the brown sugar tablet made by implementing the present invention adopts physical method completely, does not add any chemicals, and the sugar product is very healthy. In addition, the production cost of the product is low, and the market prospect is very broad.