Dark pigmentation in the neck area after childbirth in female patients is usually formed due to changes in hormone levels during pregnancy. If the dark spots at the neck area after delivery do not fade away obviously by themselves, they can be treated by photoelectricity therapy, topical medication or oral medication. 1. Photoelectricity treatment: Intense pulsed light, fractional laser, etc. can be taken to use laser energy to lighten melanin precipitation. 2. Topical medication: Hydroquinone cream, or skin care products containing arbutin or niacinamide can be used to lighten pigmentation. 3. Oral medication: Vitamin C and Vitamin E can be taken orally to play the role of antioxidant and lighten the pigmentation, and you can also consume more fresh vegetables and fruits rich in vitamin C as appropriate. When the postpartum neck melanin precipitation, it is recommended to go to a regular hospital into the consultation, under the guidance of a professional doctor for treatment, the drug should be used in accordance with the doctor’s instructions, do not self-medication.