According to Article 40 of the Product Quality Law, those who sell invalid or deteriorated products shall be ordered to stop selling, the illegally sold products and illegal income shall be confiscated, and a fine of more than one time but less than five times the illegal income shall be imposed, and the business license may be revoked; If the case constitutes a crime, criminal responsibility shall be investigated according to law, and a report shall be made to the administrative department for industry and commerce, which shall handle the supermarket according to law. At the same time, consumers can also request the supermarket to refund the payment for expired and deteriorated food and compensate for the loss equivalent to twice the payment according to the provisions of Article 49 of the Consumer Protection Law. If negotiation fails, the consumer may apply to the arbitration organ for arbitration, or bring a lawsuit directly to the people's court for legal proceedings.