Persimmons and crabs cannot be eaten together. Eating these two foods together will cause diarrhea. Crab is a cold food, so is persimmon. After eating, it will stimulate gastrointestinal function, easily hurt the spleen and stomach, affect the peristalsis of gastrointestinal function, and have adverse reactions such as abdominal pain, diarrhea and nausea. Eating crabs and persimmons in large quantities for a long time will cause gastrointestinal diseases and increase the coldness in the body.