Disease-free, scar-free and hair-free pig skin can be selected as raw material for drying. Soak the peeled pig skin in warm water for 30 minutes, then brush it with a bamboo brush or plastic brush. Scrape off the dirt on the epidermis with a knife, clean the dirt, and remove the miscellaneous hair. Do not try to use a sharp knife to shave to avoid affecting the quality of the finished product. Use a knife to repair the residual fat on the surface of the meat skin, and then cut and reshape the cleaned and fat-removed pork skin. Traditional processes in some areas require slitting after cooking. The size of the slit skin is between 5-10 square centimeters, and should not exceed 10 square centimeters, otherwise it will be difficult to pack after oil explodes. Cut the skin into small pieces and reshape it, otherwise it will easily cause broken pieces after packaging, transportation and sales. According to market demand, the pig skin can also be shredded, diced and make into other shapes to meet different customers’ needs. Put the sliced skin on the material grid tray, insert the material grid tray into the material trolley like a drawer, push the material trolley into the drying room, and the drying process can start.