Iron non-absorption of green stools may be due to vitamin C deficiency, intestinal flora imbalance, intolerance to iron, etc. Usually, vitamin C supplementation, the use of probiotics and the replacement of iron can be used to improve the situation. 1. Vitamin C supplementation: If iron is not well absorbed, you can take some vitamin C supplementation as prescribed by your doctor, such as using vitamin C tablets in combination with iron supplements. Vitamin C is a kind of antioxidant, can make the iron element to maintain in the state of divalent, divalent iron is easier to be absorbed by the body, can prevent the loss of iron. 2. Regulate intestinal flora: If the intestinal flora is out of balance, it may also affect the absorption of iron, you can use some probiotics under the guidance of your doctor, such as Lactobacillus tablets, Bifidobacterium tetrapunctate tablets, etc., to regulate and balance the intestinal flora, and to help the absorption of iron. 3. Adjustment of iron: If necessary, iron can also be adjusted, because each person has different absorption and tolerance of different iron. Commonly used iron supplements in clinical practice include ferrous sulfate and ferrous fumarate. Iron can be adjusted under the guidance of a doctor. Iron non-absorption of green stools may have other reasons, iron non-absorption of green stools should be timely medical treatment, standardized treatment.