Purple potatoes as a delicious food, in general, healthy people eating purple potatoes and what can not be eaten together. If they are allergic to purple potatoes, or allergic to other eating ingredients, whether eaten together or separately, it is necessary to pay attention to avoid, so as not to induce or aggravate allergy symptoms. Purple potatoes are rich in starch, dietary fiber, vitamins, minerals and trace elements and phytochemicals, such as carotenoids, anthocyanins and many other nutrients. Appropriate consumption helps to supplement the body’s need for a variety of nutrients. Purple potatoes in the rich dietary fiber for gastrointestinal tract peristalsis, to keep the bowel movements have a certain auxiliary effect, and purple potatoes are low-calorie, low-fat food, especially suitable for people with weight loss needs instead of eating staple foods. And rich in anthocyanins can also help remove the body’s free radicals, to a certain extent to delay aging, beauty. It should be noted that avoid eating spoiled purple potatoes to avoid food poisoning, also need to avoid excessive consumption of purple potatoes, especially for the elderly, children and other people with weak gastrointestinal tract function, so as not to increase the burden on the gastrointestinal tract, which can cause or aggravate indigestion, bloating, abdominal pain, diarrhea and other uncomfortable symptoms.