Old ginger moldy is not edible. Old ginger is rich in nutrients, there are a variety of vitamins, calcium, iron, potassium, phosphorus, magnesium and other nutrients, per 100g contains 0.26mg vitamin E, 5.0mg vitamin C, 13mg sodium, 415mg potassium, 16mg calcium, 34mg phosphorus, 43mg magnesium and so on. In addition, old ginger is also rich in water, dietary fiber, fat, folic acid and other substances, each 100 grams contains 87 grams of water, 2.7 grams of dietary fiber, 0.8 grams of fat, 11 micrograms of folic acid and so on. Moderate consumption helps to supplement the body needs part of the nutrients. However, eating moldy ginger may produce toxic side effects or adverse reactions due to the mold at the moldy place, and gastrointestinal symptoms such as diarrhea, abdominal pain and vomiting may occur after consumption. Therefore, it is not recommended to eat moldy ginger to avoid discomfort.