A milk and egg cake， which had a short shelf life and were sold on the spot， was found unqulified during a municipal food safety supervision and sampling inspection. The bakery raised objection because the labortory report date was behind the expiration date of the product. It required a double check， while according to the relevent regulations， the reserved sample had also expried. This review put forward solutions on how to improve the legal regulations for food safety supervision and sampling， strengthen the risk control of inspection and testing institutions and effectively fulfill the responsibility of the enterprise.