Gold Microneedling is a treatment that uses mechanical physical microneedles to stimulate the skin and inject drugs directly into the dermis and deep subcutaneous tissues. However, due to normal reaction, improper post-treatment care and other factors, it may lead to darkening of the skin after gold micro-needling. 1. Normal reaction: due to personal constitution, the skin is stimulated after microneedle treatment, so that tyrosinase activity increases and causes skin pigmentation, commonly known as “anti-black phenomenon”. However, the duration is generally not very long, usually can subside on its own, is a normal situation. 2. Improper post-treatment care: after gold microneedle treatment, the skin is more fragile, if you do not do a good job of care, such as prolonged exposure to ultraviolet rays, which can cause pigmentation; or after the treatment of the use of inappropriate skincare products and other products may lead to skin infections, and inflammation of the color of sedimentation. Gold micro-needling after skin darkening, should be timely to the formal medical institutions to clarify the cause of the disease, the cause of the targeted treatment. In the gold micro-needle treatment should pay attention to do not eat spicy and stimulating food, pay attention to rest, keep the wound dry and clean, strict sun protection.