The appearance of a large pile of white objects on the scalp of a 2-year-old child is considered to be scaling of the scalp, which may be a manifestation of scalp damage in seborrheic dermatitis, psoriasis or tinea capitis. 1. seborrheic dermatitis: the child’s scalp can be in the presence of microorganisms such as Malassezia parasites, seborrheic dermatitis, erythema and small pieces of furfuraceous flakes in the scalp, hair thinner. 2. Psoriasis: mostly related to heredity, when it occurs on the scalp, the scales are thicker and can go beyond the hairline, there are tufts of hair, and there can be erythema, papule or seborrheic dermatitis-like changes on the face. 3. Tinea capitis: scalp due to dermatophyte infection, can first appear red papules, gradually expanding to the surrounding oval, which can be covered with gray-white scales, occasionally itch. Pediatric scalp large scales may have other reasons, it is recommended to consult a doctor in a timely manner, clear cause, follow the doctor’s instructions standardized treatment.