Wound healing darkening can fade and disappear over time. In daily life, it can be eliminated through dietary regimen, skin care, medication and other methods. 1. Dietary regulation: in daily life, you can take in more food rich in vitamin C and high protein, such as fresh fruits, vegetables, milk, pig’s trotters and so on, which is helpful to lighten the pigmentation to a certain extent. Meanwhile, increasing the amount of drinking water can replenish skin moisture and accelerate skin metabolism, which also helps to lighten pigmentation. However, greasy, spicy and stimulating food should be avoided. 2. Skin care: Usually, skin care should be strengthened and sun protection measures should be taken to avoid ultraviolet irradiation and stimulation of external adverse environment. 3. Medication: For those who need it, vitamin C, vitamin E, and other medicines can be used under the guidance of doctors to lighten the pigmentation and promote the tissue repair of local skin. If necessary, you can also consider the way of surgery, the necrotic tissue local excision and so on. Wound healing blackened, the need for patients should go to the regular medical institutions, and under the guidance of the doctor for treatment, patients should not blindly self-medication, so as not to damage the skin.