Crab and sugar cane can be eaten together. There is no conflict between the components of the two nutrients, and they do not produce harmful substances that can cause food poisoning or affect your health. River crab is rich in protein, 100 grams of river crab contains 103 calories, of which 17.5 grams of protein, 2.6 grams of fat, 2.3 grams of carbohydrates, vitamin A389 micrograms, vitamin E6.09 milligrams, 181 milligrams of potassium, 126 milligrams of calcium and 3.68 milligrams of zinc. So crabs are more nutritious, containing high quality animal protein, while minerals as well as vitamin A are very high. Sugarcane is mainly composed of water and sugar, 100 grams of sugarcane juice contains 65 calories, of which 16.0 grams of carbohydrates, 0.1 grams of fat, 0.4 grams of protein, 0.6 grams of dietary fiber, 95 milligrams of potassium and 14 milligrams of calcium. However, it should be noted that the two foods, crab and sugar cane, when eaten together, it is best not to eat too much, to avoid causing gastrointestinal indigestion, diarrhea and other symptoms.