The contraindications to eating frozen persimmons are not to eat too much at once, try not to eat the skin of persimmons, and not to eat persimmons that are not fully ripe. The persimmon skin of frozen persimmons contains more ellagic acid. Its ellagic acid content is highest in persimmon peels, and it is even higher when the persimmon is unripe. When a large number of frozen persimmons, including persimmon skins, are ingested for a short period of time, the ellagic acid in them tends to form ellagitannins with proteins in the stomach, and the ellagitannins then combine with crude fibers and pectin in the food to eventually form stones. This is also known as gastro-persimmon stones in medical terms. It tends to cause gastrointestinal symptoms such as abdominal pain, nausea and vomiting. When the stone is relatively small, it can be expelled by taking stone removing medicine, if it is bigger, it can only be removed by surgery. Frozen persimmons due to the frozen, the stomach stimulation is relatively greater, the elderly, poor digestive function of the crowd should try to eat as little as possible.