The need for treatment of a birthmark on a 6 year old child is mainly determined by the type. If it is pigmented, generally do not need treatment, if it is vascular, depending on the type of different parts need timely treatment. 1. Pigmented type: including nevus pigmentosus, nevus of Ota, coffee spot, generally will not cause too much effect on the body, will not affect the function of tissues and organs, and will not affect the growth and development of children. If the children do not have any other discomfort or affect the aesthetic appearance, they generally do not need special treatment and can be closely observed. 2. Vascular type: for example, strawberry hemangioma. If the expansion rate of hemangioma is too fast, it may form tissue necrosis, cause reduction of coagulation function, and even cause malignant changes. This situation needs timely treatment, and it can be treated with β-blocker, glucocorticosteroid, local injection, embolization, surgery, laser, freezing and other methods under the guidance of doctors according to the condition. 6-year-old children with birthmarks should not be blindly treated, it is recommended to go to a regular hospital specialist to clarify the diagnosis after targeted treatment. All of the above drugs should be used under the guidance of a doctor.