Baby scalp with hand picking may have scalp injury, secondary infection and other hazards. 1. scalp injury: due to the baby skin barrier function is relatively weak, if parents forced to use their hands to pick the baby’s head of scalp, it is difficult to control the strength, may cause scalp injury, and in severe cases may also bleed. Infant fontanel is often not yet closed, parents force to pick local scalp, may lead to fontanel soft tissue damage. 2. Secondary infection: human fingernails contain a large number of bacteria, scalp injury, if not timely disinfection treatment, there may be secondary bacteria and other pathogenic microbial infections. Infant head long head dirt, in fact, for infants will not affect the health of the baby parents do not need to worry too much, you can strengthen the local skin care, generally after a period of time, head dirt can fall off, if there is any abnormality can be timely medical treatment.