1. Is crab a cold food? According to Chinese medicine, crabs are cold food. Chinese medicine has a long history of recognizing the medicinal value of crabs. According to the Recuperative Recipes, "it can replenish bone marrow, nourish liver yin, replenish gastric fluid, strengthen muscles and bones, invigorate blood circulation, and cure gangrene". Modern Dictionary of Traditional Chinese Medicine says its function is: "clearing heat, dispersing blood, astringent sores, treating tendon and bone injuries, scabies, lacquer sores, burns". _ It is well known that crabs are delicious, and this delicious flavor comes from the nutritional value of crabs. In the edible part of the crab, each 100 grams contains 80 grams of water, 14 grams of protein, 2 or 6 grams of fat, 0.7 grams of carbohydrates, 0.141 grams of calcium, 0.191 grams of phosphorus, 0.08 grams of iron, 0.0051 grams of riboflavin and so on. Muscle contains more than 10 kinds of free amino acids, of which glutamic acid, proline and arginine are more abundant.2. What should I pay attention to when eating crabs?1. You can't eat with tea. Avoid drinking water when eating crabs and within 1 hour after eating crabs. Firstly, tea will dilute the gastric juice, which is not conducive to the digestion of crab; secondly, the tannic acid in tea will solidify the protein in crab meat. Both of these reasons are not conducive to the digestion and absorption of crabs, may also cause abdominal pain, diarrhea. 2, can not eat with persimmons. Autumn crab fat, persimmons ripe, but the two can not be mixed to eat. Because persimmons in the tannic acid and other ingredients will make the crab meat protein coagulation, coagulation of substances if long time to stay in the intestinal tract will fermentation and decay, cause vomiting, abdominal pain, diarrhea and other reactions. Crabs and persimmons are both cold, eating the same cold will damage the spleen and stomach. It is best not to eat crabs with grapes, pomegranates, hawthorn, pears and apples.