It is best to use stainless steel liner for electric pressure cooker, which is safe and durable and meets the hygiene requirements. The stainless steel liner stews bones for a long time, and the small scratches caused by friction are not obvious. The only disadvantage is that the stainless steel electric pressure cooker has a blind spot for heating, and the porridge is easy to paste. The coated liner is non-stick and easy to clean, but its resistance to metal spoon and steel ball is weak, so attention should be paid to it when using and cleaning. After the coating falls off, it can continue to be used, but the compound coating liner is easy to absorb flavor, and the flavor of meat may remain a little after cleaning.