The baby sleeps at night scratching his face and head, often associated with physiological factors, allergic dermatitis, rickets and other factors. 1. Physiological factors: for example, the indoor environmental temperature is too high or too low, may affect the baby’s normal sleep, resulting in frequent scratching at night, should be done from the environmental aspects of some improvements. 2. Allergic dermatitis: long-term contact with allergens, such as pollen, mites, etc., when the skin allergies caused by severe itching, the baby will often scratch his face and head, and will lead to irritability, affecting the quality of sleep. 3. Rickets: related to long-term lack of vitamin D, when calcium metabolism disorders, will lead to the baby sleep is not solid, easy to wake up, often scratching his face and head. The baby sleeps at night scratching his face and head, may also be due to the occurrence of colic and other factors, it is recommended to understand the cause of the disease and then carry out treatment to avoid unauthorized use of drugs.