Lettuce as a vegetable, often eat the benefits of supplemental dietary fiber, carbohydrates, vitamins, trace elements and other nutrients, but also to promote gastrointestinal motility. 1. Lettuce can supplement the body nutrients: lettuce is rich in nutrients, contains a large number of beta carotene, B vitamins, vitamin E, vitamin C, and a large number of dietary fiber and trace elements such as magnesium, phosphorus, and a small amount of iron, copper, zinc. Properly eat can supplement the body nutrients. 2. Help promote gastrointestinal motility: lettuce contains more dietary fiber, its water absorption and swelling performance is conducive to increase the volume of celiac disease, stimulate gastrointestinal peristalsis, and soften feces, help laxative. Although lettuce is good, when eating should pay attention to the amount, so as not to consume too much, affecting the balanced intake of other nutrients, it is recommended to eat with other vegetables.