If you buy moldy things, first look at whether the shelf life has passed, and then look at whether the product packaging is damaged. If there is no expiration date and the product is not damaged, it proves to be a product problem. You can complain to the seller and relevant departments, such as industrial and commercial offices.

If you buy moldy food after you come back, you can ask the merchant for ten times compensation.

The following is the relevant legal basis: Article 96 of the Food Safety Law violates the provisions of this law and causes personal, property or other damage, and shall be liable for compensation according to law.

In the production of food that does not meet the food safety standards or the sale of food that is known to fail to meet the food safety standards, consumers can claim compensation of ten times the price from the producer or seller in addition to compensation for losses.

Desirable solution: Article 39 of the Consumer Protection Law. Disputes over consumers' rights and interests between consumers and operators can be resolved through the following channels: ① negotiation with operators; (2) Requesting consumers' associations or other mediation organizations established according to law to mediate.

(three) to complain to the relevant administrative departments; According to the arbitration agreement reached with the operator, submit it to an arbitration institution for arbitration; ⑤ Bring a lawsuit to the people's court.