Lettuce can not eat with which six kinds of food this statement is no scientific basis, because in nutrition and food safety theory, there is no “food matching” said. Lettuce is also known as lettuce, lettuce is lettuce species of the genus lettuce in the family of Asteraceae can form a fleshy stem variant, for one of the common vegetables. Its calorie is low, every 100g of lettuce contains about 16 calories, calories and tomatoes, cucumber is almost the same. The metabolic syndrome patients such as diabetes can moderately eat more. However, lettuce contains a variety of minerals and vitamins needed by the human body, such as per 100g of lettuce contains about 212mg of potassium, 23mg of calcium, 9.9mg of vitamin B4, 4mg of vitamin C and so on. The general population can eat lettuce, daily according to their own preferences, moderate consumption, help for the body to supplement all kinds of nutrients.