In general, there are no foods that are incompatible with crab and can be consumed in moderation according to personal preference. However, from a dietary analysis, it is usually not recommended to eat crab together with foods that are cold in nature to avoid uncomfortable symptoms. Crab contains more nutrients such as protein, amino acids, vitamins, unsaturated fatty acids, and various trace elements such as calcium, phosphorus and iron, which are beneficial to human health when eaten in moderation. However, considering that crab is cold in nature, it is not recommended to eat it together with foods that are cold in nature, such as spinach, bitter melon, duck, persimmon, pear, watermelon, goose and fungus, which can easily aggravate the coldness in the body and cause gastrointestinal tract dysfunction, resulting in abdominal pain, diarrhea and other uncomfortable symptoms. In addition, crab contains more protein, if eaten with a large amount of protein-rich food, such as eggs, beef, etc., easily increase the burden on the gastrointestinal tract, indigestion, constipation, should also avoid eating together in large quantities. In addition, it is not recommended to drink beer or strong tea when eating crab to avoid discomfort, and because crab contains high purines, gout patients should reduce consumption to avoid aggravating symptoms.