First of all, chestnuts can be eaten raw. In Chinese medicine, eating chestnuts raw has the effect of preventing and treating kidney deficiency and soreness of the back and legs. However, as raw chestnuts are not easy to digest and absorb. Therefore, for the elderly, it is recommended that they can eat, but do not eat too much, each time eat a 3-4 pieces, eat 2 times a day can be, and eat must chew slowly, in the mouth fully grind before swallowing, so as to increase the absorption rate. For children or patients with a weak gastrointestinal tract, it is recommended not to eat chestnuts raw, but to boil, steam or fry them before consumption.