Overnight meals are mainly overnight vegetables, overnight meat, etc. Whether you can eat them the next day in the refrigerator is mainly worried about whether nitrites will be produced, which can lead to cancer or cause gastrointestinal discomfort. Whether you can eat it or not, you need to consider the time you put it in the refrigerator, the way you keep it, and the need to observe whether the food appears to deteriorate to decide. If the overnight meal is sealed and placed in the refrigerator without bacterial contamination, it can be properly consumed after being heated at high temperature the next day. If the overnight meal is placed in the refrigerator for more than 24 hours, it is not recommended to eat, because the refrigerator is only through the way of cooling, inhibit the reproduction rate of bacteria, but the food is stored for too long, as well as sour, sticky, ectopic and other deterioration, after eating may appear nausea, vomiting, diarrhea and other uncomfortable symptoms. At the same time too long storage will also lead to poor taste and nutrient destruction of the meal. However, it is especially important to note that cold vegetables are not recommended to be stored overnight. Since cold vegetables have been contaminated by bacteria during the production process, they are not recommended to be eaten even if they have not been refrigerated for more than 24 hours to avoid food safety risks. Therefore, it is recommended that overnight meals should not be stored in the refrigerator for too long and need to be heated when eaten again. If someone experiences discomfort after eating overnight meals, those with mild symptoms can drink more salt water, tea, rice soup, etc. to accelerate metabolic discharge, or take lomefloxacin hydrochloride capsules or patchouli capsules under the guidance of a doctor to relieve vomiting, nausea and other discomfort symptoms. If the symptoms are more serious, the patient should be sent to the hospital immediately for treatment such as gastric lavage, catheterization, enema, etc., and the corresponding infusion treatment is required.