Sauerkraut has no absolute dietary contraindications, except for its allergy to the crowd can not eat, the general population can be consumed in moderation. Sauerkraut belongs to a common pickled food, mainly made of cabbage pickled, containing plant dietary fiber, with high water content (95.2%) and low fat content (0.2g/100g). Except for those who are allergic to it, sauerkraut can be consumed in moderation by the general population, and those who have low-fat needs can also consume it without worry. However, because sauerkraut in the pickling process will produce nitrite, nitrite and gastric proteolytic products combined with the generation of nitrosamines, carcinogenic effect on the human body. And sauerkraut contains organic acids, if consumed in excess will stimulate the body to secrete too much gastric acid, making the gastric mucosa stimulated. Therefore, it is not recommended to consume sauerkraut for a long time or in large quantities. It is recommended to consume more fresh vegetables on a daily basis and not to consume large quantities of pickled food for a long time.