It is normal for a 10 year old boy to have downy whiskers at the corners of his mouth. 10-year-old boy is still relatively small, in the lips may have some fine white small velvet hair, belong to the normal phenomenon, because in this part itself has normal hair follicle tissue. With the gradual growth of the child’s age, generally after entering puberty, the body’s androgen secretion is strong, the male second features gradually revealed, velvet beard will gradually transformed into a black beard, and the texture is hard. Boys have fluffy hair at the corner of the mouth, the beard can not be arbitrarily scraped or plucked to avoid damage to the local hair follicle tissue, and will easily lead to the beard part of the hair more exuberant.