Frozen foods that have expired are generally not safe to eat, as they may cause food poisoning, and in severe cases, may cause damage to the organs and increase the risk of cancer. Expired frozen food means that the food has exceeded the safe consumption period, which may lead to loss of nutrients and the growth of a large number of bacteria. Consumption may lead to food poisoning, which may cause nausea, vomiting, diarrhea and other adverse reactions. Expired frozen food may contain carcinogenic substances such as aflatoxin and nitrite after deterioration, which may cause different degrees of damage to the organs after consumption, thus greatly increasing the risk of cancer, so it is generally not allowed to eat. If the patient accidentally consumes expired frozen food resulting in physical discomfort, he should immediately go to the hospital for medical consultation to avoid serious harm to the body.