The following conditions are common in babies with prominent fontanelles: 1, vitamin D deficiency rickets, common in babies after 6-8 months of age, forehead protrudes obviously often accompanied by occipital baldness, square skull and other symptoms, can be given supplemental vitamin D and calcium, more outdoor activities, sunbathing, and add complementary foods on time, will gradually improve with age. 2, hydrocephalus, the baby’s head circumference increases, fontanelles increase in size and are often accompanied by motor and mental retardation, need timely hospitalization. 3, increased intracranial pressure can occur fontanelles, mostly accompanied by fever, mental depression or convulsions and other symptoms, need timely medical attention. Hydrocephalus, the baby’s head circumference increases, fontanel increases, and often accompanied by motor and mental retardation, need to go to the hospital in time. 3, increased intracranial pressure will appear fontanel protruding, most of them will be accompanied by fever, depression, or convulsions, etc., need to go to the hospital in time, if necessary, for the cerebrospinal fluid, head CT and other related examination.