Children's old scar refers to the obvious scar that has been formed for a period of time, usually caused by trauma, surgery, burns and other reasons. To remove children's old scars, we need to choose the appropriate treatment according to the specific situation. Here are some common methods:

1. Laser therapy: Laser can stimulate skin regeneration and promote the production of collagen, thus improving the color and texture of scars. However, it should be noted that laser treatment needs to be carried out many times, and there may be some pain and discomfort.

2. Silicone paste: Silicone paste helps to keep the moist environment of scar area, promote cell regeneration and repair, and thus reduce the color and thickness of scar. It will take some time to use silicone paste, and the effect may take several months to show.

3. Surgical treatment: For large or deep scars, surgical treatment can be considered. Surgery can improve the appearance of scars by removing scar tissue or transplanting healthy skin. However, surgical risk and postoperative recovery should be considered in surgical treatment.

4. Other treatment methods: There are some other treatment methods, such as micro-needle and chemical stripping, which can be treated according to specific conditions.

In a word, the removal of children's old scars needs to choose appropriate treatment methods according to the specific situation and be treated under the guidance of professional doctors. At the same time, paying attention to maintaining good living habits and eating habits will help promote skin health and repair.