Baby forehead protrudes high, commonly in the following reasons: 1, vitamin D deficiency rickets, calcium deficiency leads to bone changes, frontal bone protrusion, after giving oral vitamin D and calcium supplements, more outdoor activities, gradually with age will improve. 2, genetic factors, family for forehead protrusion head type, no need to treat. 3, the performance of certain chromosomal diseases, baby in addition to the special protrusion of the forehead, often Accompanied by special facial features, such as widened eye spacing, low nasal bridge, low earlobe, through the palm and so on, accompanied by low motor or intellectual level, if necessary, you can perform chromosome examination.