Sea cucumber as food does not have the effect of tonic kidney, but sea cucumber can provide protein and other nutrients for human body. Sea cucumber is rich in nutrients. Every 100 grams of sea cucumber can provide 78 calories, containing 16.5 grams of protein, 0.2 grams of fat, 2.5 grams of carbohydrates, 51 milligrams of cholesterol, 502.9 milligrams of sodium salt, 285 milligrams of calcium and 13.2 milligrams of iron. The protein contained in sea cucumber is high-quality animal protein, containing eight essential amino acids; sea cucumber is exceptionally rich in calcium, ranking high among similar foods; sea cucumber is also a high-quality source of iron, and patients with iron-deficiency anemia can appropriately increase their intake. However, as a food, sea cucumber does not have the efficacy of medicine and cannot be used for treatment and prevention of diseases, nor does it have the effect of tonifying the kidneys. In addition, those who are allergic to sea cucumber should not consume sea cucumber.