People who are prone to allergies and constipation, usually have gastrointestinal stagnation, or a damp-heat body with a thick tongue coating, it is best not to eat it. 1. The crude potato contains some nonspecific proteins, which are easy to cause allergies after entering the human body. Some people will have various adverse symptoms such as skin redness, pain, papules and itchy skin after eating it. At this time, it is necessary to carry out necessary antiallergic treatment, which is the most common side effect after people eat crude potato. 2. Gastrointestinal stagnation, or damp-heat body, people with thick tongue coating will have flatulence and stomach constipation after eating crude potato, and people with damp-heat in the body will have yin qi and toxins that cannot be excluded from the body after eating crude potato. The thick tongue coating itself will lead to irregular stool, red eyes, mouth erosion, yellow urine, toothache, sore throat, dizziness, greasy hair, hard work and bitter taste, and the illness will be more serious after eating crude potato. The crude potato has the functions of strengthening the spleen and stopping diarrhea, benefiting the lung and nourishing the kidney, quenching thirst, ulcer and ulcer, and fire injury caused by soup. This medicine belongs to the homology of medicine and food, and has a sweet taste, which is beneficial to people with weak body and weak spleen and stomach. There is not much taboo for ordinary people, but it must be cooked before it can be eaten.