A child’s scratching wound that is difficult to heal may be due to injury to the dermal tissue, pus, inflammation and other conditions before healing. 1. Wound injury and dermal tissue: the degree of healing after a child’s scratching varies from person to person, and if the injured part involves dermal tissue, it may increase the cycle of wound healing. 2. Pus and inflammation before healing: serious infections, such as pus, inflammation, redness, swelling and other adverse reactions before wound healing, may lead to difficult healing of the wound. In addition, we need to pay attention to the child in the scratching wound, the scab during the itching sensation, parents need to pay attention to try not to let the child to scratch, to avoid scarring, if the symptoms are serious and timely medical attention.